Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8aedb9a58306212…

MALICIOUS

PDF

66.8 KB Created: 2020-12-02 17:38:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 33f7dfbc5a9a7486f74b279be920636b SHA-1: d1f78b2ccaad974fe4edb7c640617f39e464bc4a SHA-256: f8aedb9a5830621212752534973d4aff2b8f5e6e4c3bc1b33f4ba41931c4e35d
96 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to 'traffnew.ru', which is highly suspicious. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or to download further malware.

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
  • 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://traffnew.ru/aws?utm_term=jnditemplate+spring+xml+configuration PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372360/normal_5f8bbeb83cd7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388038/normal_5f9e1cd83d9b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374688/normal_5f91d56286d07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417039/normal_5fb75cbd4acdd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc1b51b40f1034a5cae9388/t/5fc426ab08845d09240c9789/1606690478044/ademco_vista_20p_wireless_receiver.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/41548583441.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/93458022793.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/85336324818.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/art_and_answerability_bakhtin.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f06b104edf1d7780fa74/t/5fc281319b1ed035382d614d/1606582577801/70065251062.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf61cdae50a0145869b5d/1606219292636/4th_industrial_revolution_jobs.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/black_and_white_butterfly_images_clipart_free.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_off0000c6bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6BB 5532 bytes
SHA-256: 8d31ff02d5d27667aaf25c2b422d1d29469ed67e491620d9edfb4f969543dfe3
font_01_sfnt_off0000d97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97C 10904 bytes
SHA-256: 8653f85beff1cef4c09febb5c257e43182f8c937c08166a6e0675802d7736498

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