Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e5b3908b2c76a69…

MALICIOUS

PDF

41.3 KB Created: 2020-08-05 03:26:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c369f28ea3a2220ca5935f9d3030948 SHA-1: 577f77f1c2ba8d48e02bd2f506281841b728568b SHA-256: 4e5b3908b2c76a690f2eaa297b99ceb8f81a42d8715d7ffb640becc79950eb61
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text related to 'asset management services pdf' and the malicious URL, suggesting a lure. The presence of a link farm further supports the malicious intent of redirecting users to potentially harmful content.

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.com/pify?keyword=asset+management+services+pdf In PDF document text
    • http://files.rkgourdcreations.com/uploads/1/3/1/3/131379700/6959052.pdfIn PDF document text
    • http://levukupa.sanimage.com/uploads/1/3/0/8/130814124/1a1d467307.pdfIn PDF document text
    • http://files.ruthscurr.co.uk/uploads/1/3/1/4/131452922/9977796.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/1/0430/0269/1743/files/48906889860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/80666426878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3772/6622/files/lowekor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/54466657211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9232/7077/files/nakamichi_av_10_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9258/9210/files/arthritis_uk_plantar_fasciitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5907/6502/files/63544407885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8562/5499/files/sunbeam_activity_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3458/0891/files/180062823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2742/3651/files/61856951599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/17749359517.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 3

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_off00006287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6287 5492 bytes
SHA-256: f1203955a6da48d69cd5b7b3ea075f3eaf193ad5c2b60865a70a0940be728a60
font_01_sfnt_off00007528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7528 10400 bytes
SHA-256: 9b0bf04726b558598d41826d6ad09c742e3b5d93ef025d0a9f37961d24abaa49

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