Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74d72eeb91e49f4…

MALICIOUS

PDF

71.0 KB Created: 2020-11-23 21:04:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5eb86de939f512ca632b39defefbb505 SHA-1: 3b1b7c1b796028580118173e7bbf714aa205c30a SHA-256: e74d72eeb91e49f446e20755274775e562b5349febf9ee23d8abae2b9cf55db8
156 Risk Score

Malware Insights

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

The PDF contains multiple external links, with one pointing to 'traffnew.ru', suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are characteristic of a phishing lure designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?utm_term=garmin+edge+800+battery+replacement PDF link annotation
    • https://vajibenutiw.weebly.com/uploads/1/3/4/4/134487234/4780241.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414847/normal_5fb2c7be5afd5.pdfIn PDF document text
    • https://tizemafuniture.weebly.com/uploads/1/3/4/6/134636649/a7544.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1578661c-78e2-4fd3-af7c-d429f5432c60/bedilulajekuzotupofu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/437291a1-c1c3-4028-b68d-9b04679459b6/25190138780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85b6d58c-eabc-4f64-8f5b-a2a43bfb58c1/82813170235.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cafa36e-fbae-4fa1-9bfa-10b377dd6702/8368542510.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83c1e7c2-6f11-488f-a1c8-177c171e881e/gajakorukezavabagod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b2b9115-bbc9-43d6-87e7-139fa4a583a0/penezit.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/nvidia_shield_tv_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d054fe8e-e442-47ca-94fa-089e06eca765/gofofoneviromeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aa64e96-be3f-4175-9b6a-94bcce406a95/kepox.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_off0000d9ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BA 5824 bytes
SHA-256: 45ae700144a4d1835564f5a32c7fb911a8b2e0fbce94fb4005aecb726ec08908
font_01_sfnt_off0000ed75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED75 9948 bytes
SHA-256: e2eaae90bb97f4ccfb3fd676020c04f650b4c0bf852b0ae5ed788cb18ddcea67

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