Malicious PDF — malware analysis report

Static analysis result for SHA-256 d698756ca1592d1d…

MALICIOUS

PDF

57.3 KB Created: 2020-08-13 23:07:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bda5fd6b5dee8b4340fb02e53dae13a3 SHA-1: 5c48d07516dc7b1e9e5921c52964dc3070924e04 SHA-256: d698756ca1592d1d973e6bdde5ac05aa05c34eafecc64dfa81d6697a58ee2e2b
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The ML classifier also strongly indicated maliciousness. The embedded URL 'https://ttraff.cc/pify?keyword=extracellular+matrix+pdf' is a known malicious redirector. The document body contains garbled text but includes the same redirector URL, suggesting it's part of the lure. The numerous links, many pointing to Shopify domains but some to other unknown hosts, are likely intended to distribute further malicious content or lead to phishing 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.cc/pify?keyword=extracellular+matrix+pdf In PDF document text
    • http://files.thedollhousellc.com/uploads/1/3/0/7/130738960/07bf13154abd7.pdfIn PDF document text
    • http://files.amasesd.com/uploads/1/3/1/4/131437474/7021662.pdfIn PDF document text
    • http://files.mariannematthews.com/uploads/1/3/1/8/131856195/721612.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/1/0431/1662/6082/files/2931637872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/lucent_synonyms_and_antonyms_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/punula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3155/files/3919996320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2865/1938/files/towivotomepux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2730/8454/files/lupapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/dobotudaletuxudak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2161/5772/files/bujorapuvopulaximu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5266/1912/files/calculus_early_transcendental_functions_7th_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9870/9917/files/vienna_convention_on_the_law_of_treaties_1969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/naropikokakumunupusomaxax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/gapaxirijimesivozar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8936/2082/files/zejuzowolaraxazedo.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_off0000a33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA33A 5148 bytes
SHA-256: ec9c37ca2fba0885e3945c7aaff7e96dd5d12fbdb5d97d743657cc2c9397bd6d
font_01_sfnt_off0000b4aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4AA 10452 bytes
SHA-256: fae42c60667f4f98c2efc92914446724d397f48b9613b1e393c6a11bd8b73003

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