Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d4889468953c466…

MALICIOUS

PDF

65.7 KB Created: 2020-11-23 22:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ecba8ce9eb9eb9cc508d88e78a8898de SHA-1: 901371932647bae8fe0b38a07c55c9f82464f1e4 SHA-256: 2d4889468953c466577544f98875a9309b4042ce9f6ae0036b4f0b7f2aa7aa8a
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 0.9998

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://traffset.ru/strik?utm_term=2+chainz+mfn+right+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470975/normal_5fb822f6954cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369315/normal_5f8d1b370e435.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379053/normal_5f93831f9dcd9.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/gezumuwavizegekis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371267/normal_5f9ca823aa022.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/taladine-wirule-zufosedali.pdfIn PDF document text
    • https://pasosawa.weebly.com/uploads/1/3/4/7/134737133/givosiboni-tosajiviz-wesavulov-bafek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470014/normal_5fb50b36b5c62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384464/normal_5fb9edec136ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382421/normal_5f8c116f956cd.pdfIn PDF document text
    • https://pixogapowirotuj.weebly.com/uploads/1/3/4/6/134641161/waropopefam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370285/normal_5fa185cfd8494.pdfIn PDF document text
    • https://gagijilit.weebly.com/uploads/1/3/4/8/134865103/2375462.pdfIn PDF document text
    • https://gawosiluzetur.weebly.com/uploads/1/3/4/6/134631715/3190663.pdfIn PDF document text
    • https://sifumoxijobobo.weebly.com/uploads/1/3/4/4/134493963/4570775.pdfIn PDF document text
    • https://ribijiwazafi.weebly.com/uploads/1/3/4/8/134881841/633137522c8317.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB496 5108 bytes
SHA-256: e609a219a630e587e0fd537489491bb899d71d12a222a5649aea901c3d52772e
font_01_sfnt_off0000c5c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C5 11020 bytes
SHA-256: 0c2fb185622ed17e6bead25335d62b19103612b65add9113618b828920dbe9e8
font_02_sfnt_off0000eb28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB28 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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