Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9f0da33e3a0e862…

MALICIOUS

PDF

73.3 KB Created: 2020-12-30 03:29:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: bb5b08841429a96bb76daeaba5f59c46 SHA-1: 9ae4b97bd63c56a33983b7be70ce663dc5936150 SHA-256: e9f0da33e3a0e86283e3b4176e6e9f34505b62c1ae92a4a39bf61cd966c580ab
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffine.ru'. This URL is likely used to direct users to a phishing page or download further malicious content. The ML classifier also strongly indicated maliciousness, and ClamAV detected it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffine.ru/123?utm_term=2002+nissan+xterra+manual+transmission+fluid In PDF document text
    • https://cdn-cms.f-static.net/uploads/4492259/normal_5fada706c6bc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369907/normal_5f8b2f1cc3079.pdfIn PDF document text
    • https://cdn.sqhk.co/gajerivab/jerhigh/poweramp_v3_skin_gold.pdfIn PDF document text
    • https://cdn.sqhk.co/visukodo/iihccPe/45851856313.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424637/normal_5fd0e4d8da8ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379029/normal_5f979ec084883.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369647/normal_5f9cba884ea97.pdfIn PDF document text
    • https://cdn.sqhk.co/jajotulix/ghjgggs/94203530434.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368265/normal_5fe339cc5fffc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483839/normal_5fa782db52e8b.pdfIn PDF document text
    • https://cdn.sqhk.co/vozumolajaw/TDH2zYR/rirofozowud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376087/normal_5fc5987d57277.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE365 5300 bytes
SHA-256: 004479d54ff878ff60eb38c6594f9c5528cd3daea3fd6bed3239733e88713702
font_01_sfnt_off0000f556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF556 10084 bytes
SHA-256: 54e8ab68be0cf207661ece647b92d061a39b4f89a58af453882d1aa73c21b4c7