Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a25a1a4a82df517…

MALICIOUS

PDF

111.8 KB Created: 2021-08-03 02:22:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: d8a18dcbf27baea8fdfbf37063c50e26 SHA-1: e0ff93514e7972f86212bd27cbb556a20a795cda SHA-256: 0a25a1a4a82df5177ec012dc67e24f7225e7d5bd714ba9d47952ef6d65151454
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to compromised websites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9028

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://birzebbugastpetersfc.com/files/file/5428298442.pdf In PDF document text
    • http://fishtech.org/uploads/userfiles/file/file/fojoxapevipoxejagilo.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/dhrf95ekcsshjm5310a3ikrvua/10735362668.pdfIn PDF document text
    • http://giaoducvietnamtv.com/images/ckeditor/files/nejorulexopuwuk.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070d5ecce401---11596351860.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607341d1b2a78---lopenujefirifupomevajad.pdfIn PDF document text
    • http://vladjurnalist.ru/archive/file/powatekigumafinetawiliw.pdfIn PDF document text
    • https://techson-cctv.com/upload/file/voluvulorun.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf9e8bd0e63---96908126068.pdfIn PDF document text
    • http://blackivy.pl/userfiles/file/80752835629.pdfIn PDF document text
    • https://drticket.ir/basefile/drtiketcom/files/8449035227.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608557ef1c0e4---kuxatuvebinodoxafakixoke.pdfIn PDF document text
    • http://sun-green.nl/ckfinder/userfiles/files/88713272060.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071578946e4a---wigazajuwenujerajewin.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/46pa5oat8rniklaem4ugpm7ifc/14399825522.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/lkuh8d9vpsn2e72l8vkmn5pva3/16370788244.pdfIn PDF document text
    • https://glycocalyx.nl/userfiles/image/file/47295824180.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/8b5d71087058fbac0d9ea24ece45ef7d/gadavet.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b9c913ec2---jaguz.pdfIn PDF document text
    • https://artinterior.bg/userfiles/file/84021858791.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/1c0d6a445013816e4d1c0db5ac1eaffc/10968483838.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/73cb2a75d64954a89e373cdd110099d0/495167856.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=pharmaceutical+organic+chemistry+2+notes+pdf+3rd+semesterPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E46 18620 bytes
SHA-256: 6ff3e08ad0dcdd62f745d087277b72cfcfdbff61c2de4a46ef75ff40d1215943

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