Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e365c9b6e4ea19…

MALICIOUS

PDF

65.1 KB Created: 2020-12-21 22:15:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 65014fe0078a480cd0bcac351dd04fe7 SHA-1: 334833d470fe18781be8f13a131135ea29b974b7 SHA-256: 32e365c9b6e4ea1901e02e3d7f13dfc90955a8053f8a1f69f64319223d32cd05
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to '305 cigarettes carton price', suggesting a potential lure for illicit goods or a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/123?utm_term=305+cigarettes+carton+price In PDF document text
    • https://static.s123-cdn-static.com/uploads/4371013/normal_5fc99ad97ad85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392439/normal_5f9b6563c43dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488806/normal_5fc46f6bf32b0.pdfIn PDF document text
    • https://vilujelirajoki.weebly.com/uploads/1/3/4/3/134378771/memobodagis_jinori.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366063/normal_5fe0a36d58dea.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/fc9dca7d-e998-448d-a7ba-a6137b7eade5/54753767406.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53257050-4c23-445d-9708-6c1877951874/physioex_exercise_7_activity_1_quizlet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2763a397-e495-4e64-bd2d-4b39af334143/sular.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc71f59c43b17119888dce2/t/5fd1033afc3eb034b495568b/1607533370941/5868336548.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c011b8e-60b7-493e-ba6d-de8cdda71bfa/shooter_master_3d_free_shooting_games_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44b033b0-cc0a-4c1d-953e-d15d2d4d433d/oxford_word_skills_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/360d83a7-2617-4e95-86af-016b3fc1b9fe/types_of_reactions_then_balancing_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b4d413e-88ed-4b94-8510-042fb1b0e229/1025534455.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_off0000bf4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF4B 5404 bytes
SHA-256: 32a353d64bb3d89a3819548463ab863a80844a20f8d96fe1b28434458e347894
font_01_sfnt_off0000d1bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BB 11180 bytes
SHA-256: cf2f02e941e3f89c02a2737788cbfe9c0ea04cacbcb18f88195cbdd896605ccf