Malicious PDF — malware analysis report

Static analysis result for SHA-256 2acbd7bb5ca616c7…

MALICIOUS

PDF

69.3 KB Created: 2021-04-30 08:26:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c2e40a415fb05c1821bbb6b6f1e053c SHA-1: a3d7ec4358c8fa1d20522854bee4e1cb6112bc2d SHA-256: 2acbd7bb5ca616c779134784e43d20339b0f24dee0e9ea1f2fd403f3ab7c1fd5
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

The PDF contains multiple links pointing to compromised WordPress sites, suggesting it is part of a phishing campaign to trick users into downloading malicious files. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/rch3nk5pdh12d6c255k15s1qr6/42376612848.pdf
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/al3a80loqj3i0bh1p60a6sioj9/lulilapedoviraruduzamomob.pdf
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/11232e1ab8043078cc400baef9541f30/11329205009.pdf
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608333af8b8a2---favanapilopuwobize.pdf
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0501341b8---xatasezijuwudipigudugitog.pdf
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d15fba36c8---kiviba.pdf
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/a460f89c07f193ada5bfa8f8e9893ca2/xozuwofapep.pdf
    • http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607063f986a08---55920780549.pdf
    • http://alexanderkanevskyartistbiography.com/clientMedia/file/zozuraluzixuf.pdf
    • https://luyenthitoeic.info/userfiles/file/57196618176.pdf
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082ccda3316d---41764625774.pdf
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084aaec9d180---jekukopufapididagifexen.pdf
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/b3779020bc5a89781934743787116141/pomusav.pdf
    • https://www.truegridpaver.com/wp-content/plugins/super-forms/uploads/php/files/e568261df5bd6be01a3408f178fcf597/55530108680.pdf
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/5a833de19827bfc65cc1f1260c6d43f7/fujatijamo.pdf
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16082a357b7c58---90886890940.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=natakam+telugu+movie+full
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d911.bin
e48e755826a385b1f2037ec25fbe605b339bf846f51549ee4c5ae3c7de1be1f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD911 4904 bytes
font_01_sfnt_off0000e9cb.bin
69f49e34805a032eb1457032acb586422abc9d98b045740ff8ae56dcbe348b0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CB 10160 bytes

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