Malicious PDF — malware analysis report

Static analysis result for SHA-256 7871446062103cc9…

MALICIOUS

PDF

70.8 KB Created: 2021-02-19 22:26:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 945e49136ce763db1a20ea7233908c39 SHA-1: 2f8d412137bdeca1941f3291bfe6b8357b8aaeac SHA-256: 7871446062103cc94000c494d51849a5df463ee47f53dddff4588376e2754a27
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a site offering 'gta v xbox one redeem code free'. This suggests a phishing or scam attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wix?keyword=gta+v+xbox+one+redeem+code+free
    • https://cdn-cms.f-static.net/uploads/4366625/normal_602f1761c4ea8.pdf
    • http://xuduzovakuwej.22web.org/wipumumefobizutelofimuv.pdf
    • https://cdn-cms.f-static.net/uploads/4375352/normal_5fe9e14ade5e4.pdf
    • https://cdn-cms.f-static.net/uploads/4369802/normal_600d48a6e202b.pdf
    • https://cdn-cms.f-static.net/uploads/4452161/normal_5fd33196e7261.pdf
    • https://cdn-cms.f-static.net/uploads/4412775/normal_5fd1c37b3b66f.pdf
    • https://static.s123-cdn-static.com/uploads/4459926/normal_5ff4de7495ee4.pdf
    • https://static.s123-cdn-static.com/uploads/4475406/normal_6008660a82123.pdf
    • https://cdn-cms.f-static.net/uploads/4426549/normal_602a11ab770af.pdf
    • https://cdn-cms.f-static.net/uploads/4380701/normal_5fdb9302c46f6.pdf
    • https://cdn-cms.f-static.net/uploads/4421615/normal_602594520d21f.pdf
    • https://xagigerabep.weebly.com/uploads/1/3/1/4/131483632/xokepi_rizederumive_tunaxo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sabuxixu.epizy.com/53729877887.pdf
    • http://matezule.rf.gd/pollybeak_deformity_after_rhinoplasty.pdf
    • http://vazalavowudepip.epizy.com/jifenosomakojuxuvob.pdf
    • 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_off0000d903.bin
e016d03a5fad0f2191c5bac5755e605892ad8ad517424fb96eea9b3eeb701b84
pdf-font-stream PDF embedded font (sfnt) at offset 0xD903 5256 bytes
font_01_sfnt_off0000eadf.bin
0d6f3d95ed53326137272a494466c33ed9d06de03e78a0344a725162c0a5dbee
pdf-font-stream PDF embedded font (sfnt) at offset 0xEADF 10476 bytes