Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0b0d6588eb4a845…

MALICIOUS

PDF

77.9 KB Created: 2021-09-16 07:59:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 31bf4d6cb14d6c1080d4eedc255805d5 SHA-1: 06def8d845aaa321e31437b4b6f9922a28dcc5c4 SHA-256: f0b0d6588eb4a845686a4de66d8ed57bf58c70550d24e625b8a86c9a734a090e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting an attempt to distribute malicious content. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with a phishing lure designed to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5544

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 http://slavutich-media.ru/userfiles/file/84508766996.pdf In PDF document text
    • http://hansungid.com/userfiles/file/27975308887.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138d40ab8e2c---19818350361.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/lqqes75cjhmce9ji168kv65c41/tizizinufejiwofuj.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/xurenexabafar.pdfIn PDF document text
    • http://livestocktool.com/d/files/zuwumokefedunalokefepixo.pdfIn PDF document text
    • http://scvumaichiramen.com/uploads/files/migilaropumew.pdfIn PDF document text
    • http://minisadik-margaritka.ru/admin/ckfinder/userfiles/files/41650230001.pdfIn PDF document text
    • https://geneticapanama.com/userfiles/file/sixegozikunojodofokilim.pdfIn PDF document text
    • http://myxroad.net/upload/userfiles/file///84707980000.pdfIn PDF document text
    • https://wineart.online/userfiles/file/juwedudo.pdfIn PDF document text
    • https://firesystem.ro/imagini_ws/93220709421.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140c56e8fe99---23145915386.pdfIn PDF document text
    • http://medob.org/SITE/files/editor/file/86797285800.pdfIn PDF document text
    • http://polesprogettazioni.com/userfiles/files/91100140098.pdfIn PDF document text
    • http://scard.vn/app/webroot/uploads/files/86559308528.pdfIn PDF document text
    • http://guojingmall.com/userfiles/file///85600446561.pdfIn PDF document text
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1613ac1e48f4dc---90022054067.pdfIn PDF document text
    • http://wronba.com/uploads/wysiwyg/file/35258490582.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/161334a8a52a1c---gonije.pdfIn PDF document text
    • http://nikolabartakova.cz/files/file/dozisonevirubivelenozozes.pdfIn PDF document text
    • http://abwwilson.com/uploads/files/wokasal.pdfIn PDF document text
    • https://ksuskalology.com/images/file/kidiviwawigezulalafute.pdfIn PDF document text
    • https://taucaotoccatba.vn/images/news/files/94930453848.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=download+call+of+duty+black+ops+androidPDF link annotation
    • 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_off0000dada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADA 11016 bytes
SHA-256: a9f93273a1b735a1400cb5a36c71cf9bdd267775048ff573a947111e5b9bb6e1
font_01_sfnt_off0000f470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF470 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C82 18764 bytes
SHA-256: 44ee0223bbe12e8c687eabfcb07090dc9b158ad97578687cc51292cea185f9f6

Open this report in the interactive analyzer, or submit your own file for analysis.