Malicious PDF — malware analysis report

Static analysis result for SHA-256 015f384293a40cb9…

MALICIOUS

PDF

67.9 KB Created: 2020-12-16 04:07:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0af9e9ac8a2d4d8f0f3af8ea1fc5880c SHA-1: 993812c8e8faee433922d2122825fb8199631174 SHA-256: 015f384293a40cb9e4a26c27182a51608d597ab5cc1e1eaab948373886350feb
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffmen.ru, which is likely used to host phishing content or distribute malware. The heuristic firings indicate the PDF is designed as a link farm, with many embedded URLs pointing to external PDF files, suggesting a campaign to distribute malicious content. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

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://traffmen.ru/123?utm_term=photoshop+2020+free+download+reddit In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408598/normal_5fbfc233618ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448347/normal_5fb4514a6182d.pdfIn PDF document text
    • https://vemulasi.weebly.com/uploads/1/3/4/5/134509822/lovefo_kodarukifaz_fukaru_vekotizeguvot.pdfIn PDF document text
    • https://vesemidibokopiz.weebly.com/uploads/1/3/4/8/134869856/xitud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379032/normal_5f8b300f5f9f3.pdfIn PDF document text
    • https://dulexarupiwaju.weebly.com/uploads/1/3/3/9/133986428/genomeritivit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491669/normal_5fd7ef74c9e8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417997/normal_5fa792c3b4f7e.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/6afe00c1-535b-4a9e-bf20-0ba250348d20/xanthar_guide_to_everything.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/sesinerav.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/pabenixulagorulolagerubi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f03dca0-9053-4bf6-ac55-12b6b53db3fc/73095658131.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/zebopizija.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5995b282-9ad3-45e6-9f5d-23f05568bd1a/lg_tromm_washer_manual_wm2688hnm.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC6 5496 bytes
SHA-256: 7bb2e7a609dcbb501997829af9367d6830fa9cd5b82b6df839560a7d597d7153
font_01_sfnt_off0000df8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8B 10328 bytes
SHA-256: 5e36afca0f5e60104477a65a23595a3167d2a2a56b943301bf6e387701bd5fac

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