Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea83314f69be7ce…

MALICIOUS

PDF

39.8 KB Created: 2020-08-23 01:03:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba06680fdacc047117a654346762800e SHA-1: 23f432592b68e271271322b71aaaba6a8fcae1d0 SHA-256: bea83314f69be7ced4b08c279c18a2ce72113caf4f6ed588e2e2612b72d4ee04
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=coshh+risk+assessment+template+2015'. The document body, though heavily obfuscated, appears to contain text related to 'coshh risk assessment template 2015', suggesting a lure to trick users into clicking the malicious link. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning and driving traffic to malicious sites.

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=coshh+risk+assessment+template+2015 In PDF document text
    • http://files.cinemakomunisto.com/uploads/1/3/1/4/131407708/ditegosixa_xajefo_jiminalurukopu.pdfIn PDF document text
    • http://files.eunjukang.net/uploads/1/3/1/4/131407980/b476670.pdfIn PDF document text
    • http://xalok.buyers-club-solar.com/uploads/1/3/1/4/131437462/3968380.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/1/0437/8345/4871/files/bujudakawagubuwiruruzixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1129/2827/files/cml_treatment_guidelines_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/pidiratilitotew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3616/4774/files/29388699111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4497/6278/files/66526741453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5565/0718/files/1527513112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/4793/8206/files/irrational_numbers_worksheet_kuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7288/8742/files/harry_potter_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/enrique_iglesias_dimel.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_off00005f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F18 5476 bytes
SHA-256: cac0742f525eb5b998bddf944d10f6932982a71df9f44a7e3dd4f8e75697a04e
font_01_sfnt_off00007194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7194 9688 bytes
SHA-256: dbb87f6f1e688118b16abbbfbf949390a8341b03528ee9736ebf59acacce72d7

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