Malicious PDF — malware analysis report

Static analysis result for SHA-256 1587550fe093e9e4…

MALICIOUS

PDF

68.9 KB Created: 2020-11-11 10:35:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: de81d7bdbe033724280dffe79cfb4d46 SHA-1: b8a0cc46ad6abdd187c8907f8eae4d3db86245ce SHA-256: 1587550fe093e9e45f77bf5201360c555af96b3af42b233157a86e36a509e9b5
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'traffmen.ru'. This URL is likely used to direct users to a malicious site for phishing or to download further malware. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffmen.ru/123?keyword=a+miraculous+guide+to+gwent In PDF document text
    • https://cdn-cms.f-static.net/uploads/4418579/normal_5f9e1b6657d78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374517/normal_5f8ddf948169e.pdfIn PDF document text
    • https://mivubifazexaj.weebly.com/uploads/1/3/4/3/134381565/c405e6f5635e07.pdfIn PDF document text
    • https://bezoduremudopez.weebly.com/uploads/1/3/1/4/131437412/viruzilenu_kojoxuxuvexiput_fimamisumuv_vifel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373797/normal_5f9e26d798126.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459631/normal_5fa619b0f3294.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://s3.amazonaws.com/jotizifime/pogeramizevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d5f658c-b205-4aba-a185-6e3d6243bf90/magical_crops_gem_socket.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd379a10-f26c-48e9-8a8d-9872c2e355fb/28806850669.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/world_war_z_audiobook.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/how_to_print_at_stony_brook.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC076 5224 bytes
SHA-256: caf81250e24b4b5a9a4210c87719ae35702fe42538d363d0405eac76f1ca153a
font_01_sfnt_off0000d225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD225 11136 bytes
SHA-256: 3a81a6143af3800e7ecb36bce66061c9b299f58e9a53f00fd63b5429a2963d4a
font_02_sfnt_off0000f749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF749 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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