Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f5fe287460375da…

MALICIOUS

PDF

67.3 KB Created: 2020-12-20 07:54:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 7c5faa713028a320953703c9b29752c6 SHA-1: 114d9b25c169f96b1857f38aa2d351ead142c3c7 SHA-256: 0f5fe287460375dafa3dde0e36769bea5460e5bc4c025867c90baf9d16f4ed21
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'. ML classification also strongly indicates maliciousness. The embedded URL is likely used to lure the user into clicking and potentially downloading a second-stage payload or being directed to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=atomic+structure+questions+answers+for+neet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382790/normal_5f932c734a3b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411491/normal_5f9a16cd2415f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/degagaziv/fowejut.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/fuvabujegara.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2816b0a2757459bed19f0/t/5fc38550e6d49a06bbffda18/1606649169096/tovugaxigopidasokixulila.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b7772e34347c70655c7e/t/5fc6aebe61e25426e124c4ba/1606856383315/3580886961.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d05ecb23-8ce9-40f7-8ff7-cdf1170bf56c/kogilijaj.pdfIn PDF document text
    • https://s3.amazonaws.com/suzeduselu/86691652230.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/56014817516.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc32ae812facd59cebbb095/t/5fc5419f173fb5383b4f9cdd/1606762912186/porok.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/sufogidivezusok.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_off0000c8c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8C8 5204 bytes
SHA-256: b590eeba924c48261757b55c8dfb1d995ac64ba6562b7b5d5cc814198a00095b
font_01_sfnt_off0000da7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7D 11100 bytes
SHA-256: 2605b501ef32fc317fae6c2b37b76ae500228d0dba1e03a4fd5fd57f71333fd4

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