Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f23abc4b1b2252…

MALICIOUS

PDF

74.0 KB Created: 2020-11-24 01:36:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b0ea30e1baae8e790d60b3143e6f8a9c SHA-1: b5f457de3ef195f3abf7291d917a3cd81f32ce85 SHA-256: 07f23abc4b1b2252a4beaed83ea65dc9aab8b92263ab95663d48dd3f31b72f66
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious infrastructure.

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.
  • 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.
  • 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?utm_term=2002+nissan+cube+owners+manual In PDF document text
    • https://kugakisan.weebly.com/uploads/1/3/4/3/134390280/zawoxopodela.pdfIn PDF document text
    • https://xitokudid.weebly.com/uploads/1/3/4/6/134688137/746872.pdfIn PDF document text
    • https://mesenogixu.weebly.com/uploads/1/3/4/7/134736765/buxinej.pdfIn PDF document text
    • https://lafawifovetin.weebly.com/uploads/1/3/4/3/134369932/64287d65a63b6.pdfIn PDF document text
    • https://rotedovifiwi.weebly.com/uploads/1/3/4/8/134846651/doxazatiturogu-wapewudiku.pdfIn PDF document text
    • https://biwiporiv.weebly.com/uploads/1/3/4/6/134620494/kowiwusegisuzaw-judemujopiru-taravamovafodak.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/novifamigot/gesture_controlled_robot_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/46581616984.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/jometotowakebilesizo.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/9673038926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae1ed9b0-9d8c-4e39-8dca-b8192cdacc3c/chapter_12_geometry.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/everyman_medieval_play.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c63b045-a3e1-44ad-96e1-11fc7eed44ea/82809471197.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_off0000e41a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41A 5356 bytes
SHA-256: a92fac44a47095ec7e7c6169dc7e4eeef6a4d3ac8af2214dfb8de3bddffbef5f
font_01_sfnt_off0000f644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF644 10932 bytes
SHA-256: 2f4ebdd7607ae4922b548d0985bd88bee5b706cfe3d585be86833ce950b2c0cc

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