Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cabd00824959f4a…

MALICIOUS

PDF

66.8 KB Created: 2020-11-18 22:12:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 57d36b65a53243b0d8e4140d55ec5dec SHA-1: b9147fa3b1fb237d7bebb03e24c049c6f6038327 SHA-256: 2cabd00824959f4a4490e614c1ad8b8398817dfcbe8014428c59bcd4c73615c4
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://traffmen.ru/strik?utm_term=stellaris+baldarak+revolutionary+front' is identified as a potential phishing or malware distribution point. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest an attempt to lure the user to a harmful site, consistent with spearphishing.

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://traffmen.ru/strik?utm_term=stellaris+baldarak+revolutionary+front In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387061/normal_5fa3455f659cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374537/normal_5f892dba361de.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/0933f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427514/normal_5fa588bac310a.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/febopa/fugeropag.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/tirejovenanasir.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/sisof.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/tujuan_lembaga_pendidikan_islam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9175bb3-47dd-40dd-973e-752c7dbe89eb/23608354916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/831edbef-c064-4b9b-afcf-b1e209a7dd3a/romutinojukerikuzusanuf.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/rixekijopalol.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_off0000c9f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9F9 5372 bytes
SHA-256: e2b8a388502a5b57c72a655c60bcd58bde05c92840fb7f604e7578b06a8ca26a
font_01_sfnt_off0000dc54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC54 10080 bytes
SHA-256: dd590be58f10741e5ee459809bda37d1156da40ec7b346347e686a66ad835238

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