Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5fb9eefa8f8e12d…

MALICIOUS

PDF

75.9 KB Created: 2021-06-07 09:14:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2436c0752b75bce0929439067c872307 SHA-1: 5697def07b8d36272cd3f4c4899ea49166e44da0 SHA-256: e5fb9eefa8f8e12dc0ae173115b04c5b3e101986567ea60c0aac476bdd86850e
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm or phishing operation. The primary URL appears to be a lure for downloading movie files, which is a common tactic for distributing malware. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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.
  • 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://archism.ru/pbw?utm_term=ice+age+continental+drift+full+movie+in+hindi+download+720p+bolly4u PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4466996/normal_5fe4bb7ce5214.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413002/normal_6003c4db027b8.pdfIn PDF document text
    • https://rekaxarekarefov.weebly.com/uploads/1/3/5/3/135300852/gadiwofade.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416786/normal_5fdd43981fa02.pdfIn PDF document text
    • https://lenudigibelap.weebly.com/uploads/1/3/7/4/137499492/4dc7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469836/normal_60684e84bb251.pdfIn PDF document text
    • https://jejusutib.weebly.com/uploads/1/3/0/7/130740078/xemusufuba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495841/normal_5fed1c83a199b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463006/normal_6051f1977ac66.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422390/normal_5ff66fcaaff4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487399/normal_60579fcdb7686.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457272/normal_602aaddac105e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392861/normal_600e9c44afdf0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422372/normal_5fe8671b73729.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412394/normal_604aede397b32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486983/normal_604ab2e46b23f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471688/normal_60bc20481527a.pdfIn PDF document text
    • https://kofusozefo.weebly.com/uploads/1/3/4/5/134515267/3887470.pdfIn PDF document text
    • https://favaruzikab.weebly.com/uploads/1/3/4/8/134871436/6204742.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478928/normal_5fe5c1635321c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418184/normal_5feba47acf343.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448731/normal_5ff184ac6b37b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sikovifif.pbworks.com/w/file/fetch/144620982/vadeli_mevduat_faiz_hesaplama_hesapkurdu.pdfIn PDF document text
    • http://luwivaj.pbworks.com/w/file/fetch/144506541/how_to_create_a_new_branch_in_github_terminal.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CF 6164 bytes
SHA-256: a6e877065dd876ff036d99e0aac22bfe302ece63468cbc80283dccb9e9f29ffc
font_01_sfnt_off0000fbbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBF 10900 bytes
SHA-256: 796f085e9c264b2b6b158c4a218fe57db6675d5df9649330e556b1425fdb60a5

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