Malicious PDF — malware analysis report

Static analysis result for SHA-256 e60ffda297f0248b…

MALICIOUS

PDF

79.4 KB Created: 2021-08-28 11:16:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7716ee60aada5fc791e4083937b4b759 SHA-1: d73651a97806a12318d6c885b1e81417059c463c SHA-256: e60ffda297f0248b41119744d63db74a95ac73eadba06a0ab93e7f6b3b0271bf
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to numerous domains, many of which are hosted on compromised WordPress sites or disposable hosting, suggesting an attempt to distribute malicious content or phish for credentials. No scripts were extracted from this sample, but the structure and embedded URLs strongly indicate a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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.
  • 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.
  • 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://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abfc227959f---gezufiborewawomidebisupix.pdf
    • https://www.sherpachristain.org.np/ckfinder/userfiles/files/81319842615.pdf
    • http://moneymaker-gold.de/files/kupawigozubug.pdf
    • http://a-kamen.com/userfiles/file/rukelumemajiruzi.pdf
    • http://casier-a-bouteilles.com/file/77194692983.pdf
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7e0c0e4c3---tuxejopegojodojo.pdf
    • https://fidelishospice.com/ckfinder/userfiles/files/66219646306.pdf
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076f93cbc560---newimugokololazetodike.pdf
    • https://luminex.pl/upload/file/87449287390.pdf
    • https://lwim-ouargla.dz/ar/files/42810171416.pdf
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/d28554914bbd006588bf563500c99ab9/gevogura.pdf
    • http://jinistudy.com/_UploadFile/Images/file/56895047651.pdf
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/580dc82f41c708a21f323269c47351b9/lanisajobadalubo.pdf
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075bf97913a2---53145446396.pdf
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/lp810uht528dtk41ie1g76hq67/22591691833.pdf
    • https://aquamedicasatumare.ro/ckfinder/userfiles/files/11405063148.pdf
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/15ef0221cb711360792edf1aed757c61/1588074656.pdf
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160743aef89f0b---11395341972.pdf
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/gmido0s49rf6bqfkoee7198rn3/kikakugevigewokekav.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/c928ed796b5f1a20bd68f25b6b3c6e06/netatabofivurodilapogiteg.pdf
    • http://indexone.ru/upload/file/2821231812.pdf
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160756f36540c1---86754354330.pdf
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f5812d7bf3d---19438143980.pdf
    • http://al-bandak.com/userfiles/file/11496966792.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=the+rock+for+president+2024
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d075.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD075 16792 bytes
font_01_sfnt_off0000e887.bin
8df7bad0338982a28eade57e5cf5dd92092aef4a3d5c068cdf22f311591c378f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE887 17800 bytes
font_02_sfnt_off000116c1.bin
cc427d6571cd5e01471bbd8debdf34c7e59a03554bdc1b018a4e12e1be6a8984
pdf-font-stream PDF embedded font (sfnt) at offset 0x116C1 10884 bytes