Malicious PDF — malware analysis report

Static analysis result for SHA-256 906e30966b37a3c1…

MALICIOUS

PDF

42.9 KB Created: 2020-08-21 01:10:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 026d1e6948d0306f231d6b8851bf8bb8 SHA-1: 41add12b274916d93e6c84fb471bfc120fa0b7ff SHA-256: 906e30966b37a3c12dbef2fff2aac324fc56901cf5b8a5dbf43d6b2679257b99
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link pointing to 'ttraff.ru' which is associated with the keyword 'bkav pro android crack', suggesting a lure for users seeking cracked software. The document body, though heavily obfuscated, also contains this URL and references to security software. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.ru/pify?keyword=bkav+pro+android+crack In PDF document text
    • http://files.heavensgatepmc.com/uploads/1/3/2/7/132712323/a65af25336a2060.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4207/7852/files/attractive_man_conversation_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0855/6182/files/nofovazunuzonomowuronep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0273/6279/files/5701783684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fatexuxutul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/70528214470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8427/4081/files/92646036971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/23363360392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/33938541961.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 2

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_off00005d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D26 5028 bytes
SHA-256: ec3084ef676dbf34ab5e0c6d23a37d546f71d0fc1369399ee6670672f3024d60
font_01_sfnt_off00006e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E51 15796 bytes
SHA-256: a213c266da5bd10b9dfc1b2dc8a7135f529190c3f0f78d2cf300df62933e153b

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