Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0cb2e4b5031f246…

MALICIOUS

PDF

65.5 KB Created: 2021-06-04 15:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae9045c8b3d0c6f27c3804f787847e75 SHA-1: 7e7759683fd6190c9ad5a3ddb5276b4e492e93d2 SHA-256: d0cb2e4b5031f24635d5c3b622a2ea1fc8b394b6810cb1acd0fa0fee7f4d0ce3
156 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, masquerading as a download for "3d sound hindi dj songs mp3 download". The heuristic PDF_SEO_LINK_FARM indicates a link farm, and ClamAV detected it as Pdf.Phishing.Trojan. The embedded links likely lead to malicious content or phishing sites, and the document's structure suggests it's part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pistant.ru/pbw?utm_term=3d+sound+hindi+dj+songs+mp3+download
    • https://static.s123-cdn-static.com/uploads/4484804/normal_5fe35d79a1443.pdf
    • https://cdn-cms.f-static.net/uploads/4445888/normal_606a32baeebd8.pdf
    • https://noguvipeves.weebly.com/uploads/1/3/4/7/134717425/nobewimija-kexirodasilojof-guwuril-getufinekedewaj.pdf
    • https://cdn-cms.f-static.net/uploads/4454301/normal_6055901b9481b.pdf
    • https://lexifodupep.weebly.com/uploads/1/3/2/7/132712330/dokonesowamopoforat.pdf
    • https://cdn-cms.f-static.net/uploads/4470024/normal_6058609dea2c3.pdf
    • https://subogepaweb.weebly.com/uploads/1/3/2/3/132302814/6727213.pdf
    • https://static.s123-cdn-static.com/uploads/4449987/normal_5fc5724f3912a.pdf
    • https://cdn-cms.f-static.net/uploads/4482009/normal_60b8bad519cd7.pdf
    • https://cdn-cms.f-static.net/uploads/4459921/normal_6019b3a71b01d.pdf
    • https://cdn-cms.f-static.net/uploads/4487381/normal_601f29ec39a2b.pdf
    • https://fevowavekotaxuw.weebly.com/uploads/1/3/4/6/134635114/badixi_zujomisuxulofa_kokopum.pdf
    • https://poxusesemeli.weebly.com/uploads/1/3/4/4/134462398/sarid.pdf
    • https://static.s123-cdn-static-d.com/uploads/4379722/normal_60b5e0a6592a9.pdf
    • https://burabusuzu.weebly.com/uploads/1/3/4/6/134649623/tugiwof.pdf
    • https://static.s123-cdn-static.com/uploads/4467285/normal_5fc866a6c997d.pdf
    • https://cdn-cms.f-static.net/uploads/4466679/normal_605653cb75614.pdf
    • https://cdn-cms.f-static.net/uploads/4472188/normal_6068b28f29e08.pdf
    • https://cdn-cms.f-static.net/uploads/4413564/normal_601f547350d7a.pdf
    • https://sujutojulaj.weebly.com/uploads/1/3/4/3/134359820/zomaridekanenenu.pdf
    • https://nepufetok.weebly.com/uploads/1/3/1/4/131438640/zogal.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c595.bin
1a0fa0837027b708eb86ad1ae02d9644e54ece65fc3258756c0c659024ca856c
pdf-font-stream PDF embedded font (sfnt) at offset 0xC595 5516 bytes
font_01_sfnt_off0000d846.bin
2ab344a71d615738279c45161d26a7f182bdf7b68b689f07b96d5973666e8b6c
pdf-font-stream PDF embedded font (sfnt) at offset 0xD846 9524 bytes