Malicious PDF — malware analysis report

Static analysis result for SHA-256 504f02eaa12e8d6d…

MALICIOUS

PDF

76.3 KB Created: 2021-05-24 17:44:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5c968a93f9015b44a6c1f4fb7358250 SHA-1: 2a3dde4317e4ae921b98e05f8e7ce0a0b01b9a8e SHA-256: 504f02eaa12e8d6d850beb402a9e863b678209aa9ed5a288ba8fdc95f4be1f36
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains numerous links, many pointing to compromised WordPress sites, designed to lead users to fake login pages. The embedded document body text, though corrupted, contains a reference to 'epicgames.com/2fa login', suggesting a credential harvesting lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7282

Heuristics 5

  • 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
  • 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://ketchas.ru/uplcv?utm_term=http+%252F%252Fepicgames.com%252F2fa+login
    • http://afghansolar.com/userfiles/file/1382715605.pdf
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/be3ac5b0d4c6b3c326f72f78c5226d43/mopatuj.pdf
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607f39c51018e---46131765277.pdf
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/n20cdgrho92q2ff6m29srj6an6/29604711497.pdf
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/9481dd0ffc7b392d6238c138f4c0c21f/40776071013.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/1c6611088be32148c200e12b170c98aa/46249437762.pdf
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073082c27077---35416022141.pdf
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/5f65nrkkcte1url7kh8b4pq541/57834373412.pdf
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16082f5ef358bf---93663473068.pdf
    • https://www.bistro-e.com/wp-content/plugins/formcraft/file-upload/server/content/files/160780be68c45b---loturatumusafok.pdf
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/a5bfdc9e2ea1f94e06231d1373213b36/8311776699.pdf
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/596i2k5t82ttd8eoagtsvdarn3/8933696707.pdf
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/4aed74a988d6e40fd599181394454f96/94927613853.pdf
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/e0jcatr9k1fi43q4tu5m5m66va/fanubexalidobenaxoj.pdf
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/5fd43ffb4bf5723653e70a4c2dc848f6/tuwasowaparita.pdf
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607d363fce0e3---zobafegekelejasos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL
    • 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_off0000e703.bin
9aac614c01822d3bfe86f3434884ea4b865a0cfe69b0814b826607863e97c6a8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE703 5400 bytes
font_01_sfnt_off0000f972.bin
c7d354924cbd7b82d9401196e6fbf9a229078b2f5a1a0fa3ff4c6ab1a05aec0f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF972 11160 bytes
font_02_sfnt_off00011eee.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e
pdf-font-stream PDF embedded font (sfnt) at offset 0x11EEE 16204 bytes