Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60e238b0b3ad907…

MALICIOUS

PDF

112.2 KB Created: 2021-06-27 18:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: deb2272546048561324e3634a86e58ef SHA-1: 4b9bba3d5a94e38a16831b2b5b065e770c917dce SHA-256: c60e238b0b3ad9075d4cd13727467c65df369fb5f39a0e92709a436ee6a4846e
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1534 Internal Spearphishing T1204.002 Malicious Link

This PDF document exhibits characteristics of a phishing attack, specifically impersonating the UPS brand to lure users into clicking a malicious link. The document contains language related to payment redirection and invoice lures, suggesting an attempt to trick users into providing sensitive information or initiating fraudulent transactions. The presence of numerous external URLs, many hosted on compromised WordPress sites or disposable domains, further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://irlanc.ru/uplcv?utm_term=south+gate+police+number.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://irlanc.ru/uplcv?utm_term=south+gate+police+number PDF link annotation
    • http://lhdrum.com/User_File/UpFile/file/20210627203142_ZG9kdWR1Z2k=.pdfIn PDF document text
    • http://vmkmsz.hu/userfiles/file/saloxanutal.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/a294ca67744be2c817826907366b6588/23671811371.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/59ccea178cab33b92752d9734400ba81/minurikewigut.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/16093b040371f2---pujusizebabonuratuwivodar.pdfIn PDF document text
    • https://www.alapan.org/fckimages/file/39242250504.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b99b5953f22---bebenilanoz.pdfIn PDF document text
    • http://zjqzzx.com/uploadfile/file/2021052407414273499.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/gezibesegimak.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff8df9a654---69829191506.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083d8d9e158b---9817769146.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/8rs0mto1qkjs32u6lbupfdhlgo/femazewiluzagiri.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16071a5334c30f---gubadeluzixaw.pdfIn PDF document text
    • https://diaochue.vn/userfiles/file/jekukovonuvum.pdfIn PDF document text
    • https://www.swissfillon.com/wp-content/plugins/super-forms/uploads/php/files/247b2db56695cf75831a326a3d0a7a48/juvagu.pdfIn PDF document text
    • http://sntaviator.ru/ckfinder/userfiles/files/puzoborumobikonuz.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089359f30a0a---dufitunom.pdfIn PDF document text
    • http://texmet.pl/userimages/file/dekegadet.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b478141cbfb---wesuvuzopikupanikofexiju.pdfIn PDF document text
    • http://qytbearing.com/upfile/file/rosegewebogonofofikij.pdfIn PDF document text
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/fa2da692a98e1142d770029bff058e2d/rinawuriwupewimi.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160856f409eaa5---diwojenabijesatavowudul.pdfIn PDF document text
    • http://robertfeinberglaw.com/images/edit_images/file/lufixatiwakatorizozunelod.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/16082507136d40---jojadokuruwuxo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15634 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00016e4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E4B 10968 bytes
SHA-256: c98bbe269f595090b955479562715e052e7e6127ba6481e102a7edeccc86eaf6
font_02_sfnt_off00018758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18758 16856 bytes
SHA-256: 41d28842e19e410f789ef4ffd8d21cd15a9992cff04cddd06a663df9891c38b6

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