Malicious PDF — malware analysis report

Static analysis result for SHA-256 61229be065b34e1b…

MALICIOUS

PDF

86.6 KB Created: 2021-09-15 13:33:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: bbf850e4efc760f4d9d025d6e293f811 SHA-1: 33c7a1cea3b31d42f7d2ec8f918f262d143e074b SHA-256: 61229be065b34e1b18c4c6942895de8565ef8bde0292f6ea98d01118c565488b
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or a scam. While no scripts were explicitly extracted, the presence of embedded URLs and the 'PDF_URI' heuristic suggest potential for JavaScript execution or redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://drafthe.ru/uplcv?utm_term=lost+in+translation+hot PDF link annotation
    • https://xo-sound.ru/userfiles/file/4639581166.pdfIn PDF document text
    • https://egokituz.eus/files/galeria/files/rezozajakojexupusa.pdfIn PDF document text
    • http://bandbaajabarat.com/ci/userfiles/files/kemifaradejizag.pdfIn PDF document text
    • http://youzedu.com/ckimages/files/20210902064829211428.pdfIn PDF document text
    • http://chongthamnguoc.vn/img/files/45126836984.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/r2h12h1po35sdsa6t71evf8uan/kokasopunamukavuzeperiv.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/611h4ahsf5t6albuagm1lpn1mj/6630911886.pdfIn PDF document text
    • http://alrabbancapital.com/file/files/71975710435.pdfIn PDF document text
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/161410e5b6ccde---valewidakisofa.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/f25e006536dcdf6d3c9733b674e1e560/91164783822.pdfIn PDF document text
    • http://j-line.ca/fck_upload/file/binevuboloritazaxeko.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/cddcabd2b14349db55c5e38fcd82dbc4/43503366417.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133d9498c04b---8948319542.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161404b1bc8e3d---53381493297.pdfIn PDF document text
    • https://homecareangels.ca/files/files/files/29518055650.pdfIn PDF document text
    • https://ecableapp.com/FCKeditor/FCKimgUpload/file/takidu.pdfIn PDF document text
    • https://makanbanyak.net/contents/files/70135244776.pdfIn PDF document text
    • http://spain-ex.com/images/blog/file/20345799998.pdfIn PDF document text
    • http://geomanteia.com/userfiles/files/74478349689.pdfIn PDF document text
    • http://chinazzjx.com/d/files/77286585943.pdfIn PDF document text
    • http://baove24h.org/upload/files/68345044882.pdfIn PDF document text
    • http://parmalab.it/userfiles/files/28180239537.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/9b127e6242b175d9cf3255af8587d99c/58197300781.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_off0000ea32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA32 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10244 19816 bytes
SHA-256: 515dd2c91ff044a464ef4233c41a9f647aa54550b484c718b70d33e0a15af71f
font_02_sfnt_off0001369a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1369A 10032 bytes
SHA-256: 77f98402b6a1c88ca77ffc95e32f80d7e322119d94221af8ca733e318741d01e

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