Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e95cfdfff5f64d…

MALICIOUS

PDF

69.7 KB Created: 2021-09-07 20:14:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: af9a8150f8bf87041c2fef10a1e988c2 SHA-1: 9b64706a2796565fcc3de301f00ec7bd1e86d770 SHA-256: 89e95cfdfff5f64d3250de80f56902223e12ca6e971f248e6af27f0685308020
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded JavaScript and is identified as a phishing lure by heuristics. The document's structure and numerous external links suggest it is designed to redirect users to malicious websites, likely for credential harvesting or further malware delivery. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://fantacyhandicraft.com/userfiles/file/vafuliwu.pdf In PDF document text
    • http://absolutelyneon.com/userfiles/file/95379698587.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160750f4038fc7---tozilolo.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/pifoforoxerimujixosiv.pdfIn PDF document text
    • http://dambi.pl/userfiles/file/subosupo.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/v8bstk8cavd679ue45qen1b44i/besatubomo.pdfIn PDF document text
    • http://bertoniamministrazione.it/bertoni/public/file/64675786901.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16115b3b09bc8a---99644465903.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec9eede5369---42039929425.pdfIn PDF document text
    • https://www.ewdel.cz/ckfinder/userfiles/files/dikigeboxageto.pdfIn PDF document text
    • https://fanaf.com/article_ressources/file/kogusivejekiken.pdfIn PDF document text
    • http://transinfosoft.com/userfiles/file/gujewiri.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607218ff2c72d---38177405461.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/c9bf2962709209d49cabf36ca44a6c4b/poxiwuwakimiluja.pdfIn PDF document text
    • http://albarossa.jp/js/upload/files/rodinu.pdfIn PDF document text
    • http://trickorsuite.com/clients/5/5d/5d84d12f6f4dfd10bbe5497c884a5f3e/File/tijanarivogalepogunivaxij.pdfIn PDF document text
    • https://elmaga.lt/components/com_mijoshop/opencart/image/data/files/zurisesunezitexaguzanet.pdfIn PDF document text
    • https://dongcohonda.com/userfiles/file/xalozabowalimuxo.pdfIn PDF document text
    • https://motoquadro.de/userfiles/file/xifevibumimolifanulo.pdfIn PDF document text
    • http://pluimveebeurs.com/userfiles/file/57645861885.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aad070342f0---febonobapasibopere.pdfIn PDF document text
    • https://bamor.org/userfiles/file/67820927219.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=multiplication+practice+4th+grade+printable+worksheetsPDF link annotation
    • 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_off0000b2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2F3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB0A 11284 bytes
SHA-256: 6ddb5bddd64ad90fad9b75b3c84c39073e6dece66b5e0fe5b79025e770e29bca
font_02_sfnt_off0000e52c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52C 14396 bytes
SHA-256: 201f17d2f07ed6dc6e22dc34a61264429036aa1e5f1a38905ace00adb1017aa3

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