Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e30a80cfa958e2…

MALICIOUS

PDF

62.5 KB Created: 2021-06-09 00:57:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7163c2cc5d84cab9b0616d040c8b8e93 SHA-1: b23221cb5781444d7c0d29073868956b8001fc92 SHA-256: 17e30a80cfa958e22f48f4c4fb18f3b70be72efb3b00054e3827841776e7798a
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8425

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://queure.ru/pbw?utm_term=adele+50+shades+of+grey PDF link annotation
    • https://wironutoti.weebly.com/uploads/1/3/0/7/130739747/xewogomejotaluwirena.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366956/normal_604d3566e263e.pdfIn PDF document text
    • https://fivomatimib.weebly.com/uploads/1/3/1/0/131070631/mavemodunepajotigu.pdfIn PDF document text
    • https://kikizesojumare.weebly.com/uploads/1/3/4/7/134718780/7b46b3b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380881/normal_5fe9bf31603b9.pdfIn PDF document text
    • https://pavaliwakugaban.weebly.com/uploads/1/3/4/3/134373235/luseweti.pdfIn PDF document text
    • https://gegelejete.weebly.com/uploads/1/3/7/5/137500710/pavavexudefixan.pdfIn PDF document text
    • https://molilavavabofu.weebly.com/uploads/1/3/5/9/135989114/xugirofinapakiriko.pdfIn PDF document text
    • https://joxedobiwot.weebly.com/uploads/1/3/5/3/135350216/birezobafutita.pdfIn PDF document text
    • https://gexawagezawa.weebly.com/uploads/1/3/2/6/132682787/9973774.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wimarolos.pbworks.com/f/donulibiwip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d800147-d880-49fd-98c9-42e268d04651/39045569577.pdfIn PDF document text
    • http://sejuworepow.pbworks.com/w/file/fetch/144419169/kenixujoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fa4dd92-febc-40c3-bef6-aa603c0597c3/arduino_uno_schematic_symbol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82190075-26a2-498d-85f3-aa8b2d3035a8/watch_helter_skelter_2004_movie_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d66febbf-9d9c-494b-9924-7c6383ac98e5/2980351913.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA06 5524 bytes
SHA-256: 951ba1cd0ad24903c8d64f5afc0988df5baa6395cdf366f8e93cf476cc22694f

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