Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e217f0f3109849a…

MALICIOUS

PDF

71.6 KB Created: 2021-03-29 11:25:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a201c46f5c4a9ade18e2f2a4c953112f SHA-1: b5095ca225dcc0b2dd240ad5e6356aef2a737a92 SHA-256: 7e217f0f3109849af53c2d016c034321c9c86138c9053a4477aa082f80b37241
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, specifically identified as a phishing trojan by ClamAV. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document's metadata indicates it was generated by wkhtmltopdf, and the presence of external URIs with UTM parameters further supports a phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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 https://resalured.ru/strik?utm_term=scansnap+s1300i+help PDF link annotation
    • https://dimafivatoputir.weebly.com/uploads/1/3/4/4/134496040/bifawonivononojudij.pdfIn PDF document text
    • http://jolijivik.scienceontheweb.net/zitavivulisurute.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489994/normal_5ff9bc80904ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448121/normal_5fdc856211edd.pdfIn PDF document text
    • http://wapezon.22web.org/advanced_excel_formulas_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496571/normal_6003732eaf14f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_605a927073229.pdfIn PDF document text
    • http://gudazugaxogipo.22web.org/call_down_the_hawk.pdfIn PDF document text
    • http://rezubodojel.medianewsonline.com/sosiluvitewebuwupi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491432/normal_5fde81112111f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389792/normal_60325321482f0.pdfIn PDF document text
    • https://rewekofewu.weebly.com/uploads/1/3/4/6/134654248/jutigaz-manonufiwibagop-ronoxi.pdfIn PDF document text
    • http://nanamojuvimujo.medianewsonline.com/devababe.pdfIn PDF document text
    • https://guduzuzej.weebly.com/uploads/1/3/1/6/131606672/6616fba2324bfb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490364/normal_601c69e969008.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lerezazo/adani_enterprises_limited_annual_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/nunoge.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/fisiluburefilute.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d99d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99D 5384 bytes
SHA-256: 5a95e267806f6d2073d21b43e235922f92ac8a9b6bfd19f66a3e28c74c588be8
font_01_sfnt_off0000ebf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF4 11056 bytes
SHA-256: d4f45871f127e51c9299a8e49eb8fb94ec59da33c90bf5708cadb7231f58fe3e

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