Malicious PDF — malware analysis report

Static analysis result for SHA-256 c80954b1370d80e8…

MALICIOUS

PDF

72.6 KB Created: 2020-11-10 07:30:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 63f1d3ce771a56f5319d5b8c5b5862b1 SHA-1: 7dd7a6b6ebb4bebefcd3aae83796a41fff50951e SHA-256: c80954b1370d80e85ff5c94f407c30867d365fbb09390eeca385425a5e0f4a91
162 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 'https://gettraff.ru/strik?keyword=lake+aloha+map'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL and the document's structure suggest it's designed to trick users into navigating to a harmful site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/strik?keyword=lake+aloha+map In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384316/normal_5f9c17d1c7ab0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387924/normal_5f912885b5ff0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369788/normal_5f8c9a57f2663.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_5f9ca5dd2c635.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_5f91e80ec9afa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411926/normal_5f9dd13cd4bb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_5f872461a42ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408323/normal_5f938b7eca595.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f87b18154c37.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/73a9a32f-883b-4b1f-b2d1-d44a63f394ed/deruvaj.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/signo_del_camalote.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/37545608091.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/vumol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD474 4344 bytes
SHA-256: a40531e59e5992bbd08154bc9be439c220a7ce20c072d455daa79ed76967d788
font_01_sfnt_off0000e330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE330 10732 bytes
SHA-256: f9be03d842bed7754509b9ea00afa23b9bb4a956c96b2819b1f95bed04ac6cdb
font_02_sfnt_off000107ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107FF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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