Malicious PDF — malware analysis report

Static analysis result for SHA-256 763c395e6761c1fb…

MALICIOUS

PDF

37.0 KB Created: 2020-08-04 10:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0d1b38f27d2b2a728c4303071bc459e8 SHA-1: ec95be8d621cac7c6569da992fe19627b2b61b0f SHA-256: 763c395e6761c1fb3095fec7eb7205a232bd46b243eef8ce086c23c3681d54cf
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate search engine results for PDF downloads, but they redirect to malicious infrastructure. The primary redirector URL is https://ttraff.com/pify?keyword=the+letters+of+abelard+and+heloise+pdf+download, which is flagged as malicious. This indicates a phishing or scam attempt leveraging SEO tactics to trick users into clicking malicious links.

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=the+letters+of+abelard+and+heloise+pdf+download In PDF document text
    • http://files.annettemitchellart.com/uploads/1/3/1/4/131453415/lilewolubisilemami.pdfIn PDF document text
    • http://files.katorika.co.nz/uploads/1/3/2/3/132303410/6434612.pdfIn PDF document text
    • http://files.allthatglitterscompany.com/uploads/1/3/0/7/130739789/634e7e.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/1/0440/2629/8533/files/form_5329_t.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9511/2347/files/werorenovofurofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9734/8514/files/fixesatigonitiwajopedugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3180/4574/files/bosch_300_series_dishwasher_installation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1778/0896/files/puvixedanuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5715/1142/files/alan_turing_the_enigma_by_andrew_hodges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5765/0584/files/js_string_contains.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4872/2851/files/fopivinawozotitebemaxuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/43938851282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/velamazeligoxezudenizena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8871/files/mubewez.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 5

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_off00005179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5179 5312 bytes
SHA-256: 7f883a6da201f442de76105ee1c3bd373af3cb3d2dd21e73b25604ab5d496366
font_01_sfnt_off0000638a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638A 10484 bytes
SHA-256: 4a601564e6e6fe82fd04fe7dba5bda3265fa5567b27b2560e400d9e4be5d5205

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