Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0155e21be828e51…

MALICIOUS

PDF

69.4 KB Created: 2021-01-03 02:35:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: e74ed92e078a51ed46efafe360653132 SHA-1: 361c7f4a94c9df47ce01942322af8185c659f6bb SHA-256: d0155e21be828e51981d619543822cf9e49deabc7effb55be6218ac3883dfc1a
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffking.ru, which is likely used to deliver a payload. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest it's designed to exploit users into clicking through to a compromised site, likely for phishing or malware distribution.

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://traffking.ru/aws?utm_term=airplane+flight+simulator+apkpure In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421038/normal_5fa172daf41f6.pdfIn PDF document text
    • https://duketexu.weebly.com/uploads/1/3/4/7/134725944/7644494.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/BV2gfU5/fitbit_charge_4_special_edition_review.pdfIn PDF document text
    • https://kudoxere.weebly.com/uploads/1/3/4/5/134591480/minudarozomudato.pdfIn PDF document text
    • https://xugubevowasisof.weebly.com/uploads/1/3/4/8/134885616/buwude.pdfIn PDF document text
    • https://kufofena.weebly.com/uploads/1/3/4/5/134504524/4729046.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/lezopobigeza/calo_des_morts_formentera_como_llegar.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/47768061178.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/baby_crying_video_status.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/nowufina.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/bobegobeganemir.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/chick_fil_a_warming_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/lagu_kartonyono_medot_janji_cover_gitar.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_off0000d407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD407 5368 bytes
SHA-256: 1ec66470e7cbae46d8302ae19070a313414869cf4c7b1f51d0f4f2d6181cd5eb
font_01_sfnt_off0000e622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE622 10032 bytes
SHA-256: cf47ecad80ba25ba1b2fb691bf02dfa5c5c62a48b197846253478abc90b24966

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