Malicious PDF — malware analysis report

Static analysis result for SHA-256 409145bea425cff9…

MALICIOUS

PDF

41.0 KB Created: 2020-08-09 05:27:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8610b2468b513ce37a38c4669ab5c928 SHA-1: 0a733244f7d68c070f029c08f1164d3d8e07de6f SHA-256: 409145bea425cff90cdc950062a83aad9d7e0e6a551edfdbbc52a618d18a01a6
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=british+english+grammar+pdf', suggesting a lure to download a grammar PDF which redirects to malicious infrastructure. The presence of many external PDF links, including those hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the ultimate destination.

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.cc/pify?keyword=british+english+grammar+pdf In PDF document text
    • http://files.deleswaonthetrack.com/uploads/1/3/1/3/131379899/mogogagimelevutivome.pdfIn PDF document text
    • http://files.sasquatchcanada.com/uploads/1/3/1/4/131437636/jumov.pdfIn PDF document text
    • http://gedumal.cambriaseastar.com/uploads/1/3/1/3/131398140/8457868.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/1/0435/4742/6975/files/volkswagen_jetta_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8788/8551/files/11780130059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/76785719902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1510/0826/files/adjective_and_adverb_prepositional_phrases_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1949/3785/files/damomugetom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2789/6219/files/ever_never_for_since_yet_already_just_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3130/files/1038546203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6401/6539/files/69418924187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0071/files/32917578850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6339/1894/files/analysis_for_office_2._7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5032/0543/files/76316830545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7144/6948/files/bsff.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_off000061ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EA 5504 bytes
SHA-256: 46eabafac4581ef916a4390354ce9e7a7350c328674515454ab36d402ca23097
font_01_sfnt_off0000747c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x747C 10044 bytes
SHA-256: 831bf1863854631abf8e2e46ce253849c9ee450348154cdd2c2432e9ee05220e

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