Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e00ddf188334c5e…

MALICIOUS

PDF

73.3 KB Created: 2021-06-14 06:50:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c131415ccd17c2bc2ac561c28c9e5498 SHA-1: c5dc782f65b846453e0fa3c03ee3fb8fc08ad773 SHA-256: 2e00ddf188334c5e797fc91698c36e53047968719b8026886e2c1584c0e0f4df
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9997

Heuristics 6

  • 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
  • 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://inwebjor.ru/pbw?utm_term=where+do+you+find+wild+honey+in+slime+rancher PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490929/normal_6044938a41f91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415739/normal_60691bba47b0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488339/normal_60571e2b2cc01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462093/normal_600c371b81814.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4414701/normal_60b3a4afda0f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421058/normal_60651632f3ce4.pdfIn PDF document text
    • https://dezilupogebog.weebly.com/uploads/1/3/4/1/134109094/d00098f98889d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471081/normal_5feb02ae0d6c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415537/normal_606df05ed7603.pdfIn PDF document text
    • https://moxujudafetofa.weebly.com/uploads/1/3/2/7/132712376/3515309.pdfIn PDF document text
    • https://runogobikekeg.weebly.com/uploads/1/3/5/3/135350887/70a350685196.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_60c18ca2e5208.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407327/normal_6038d5b061756.pdfIn PDF document text
    • https://wakabidodez.weebly.com/uploads/1/3/4/6/134632857/sixuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379733/normal_606e1ffbb2cdb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459791/normal_5fe28d83e85bd.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4387433/normal_60b1ed0b06e8e.pdfIn PDF document text
    • https://sojikopel.weebly.com/uploads/1/3/4/7/134760404/5383046.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gufabewa.pbworks.com/w/file/fetch/144480339/how_to_break_free_from_curses.pdfIn PDF document text
    • http://xeninexiruvo.pbworks.com/w/file/fetch/145173144/80947449342.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_off0000df8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8C 5468 bytes
SHA-256: 43f770aac49bf35f4e4d2a43b1aa1cf9a1cce06906a249b1e02012fcfc2ccfb0
font_01_sfnt_off0000f21a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21A 10620 bytes
SHA-256: 93bd0b7b019164696fc19e9edf8b1c5ac4f64d1d44a9f82239ada6823a6d0cf7

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