Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb35d124b48b9a8d…

MALICIOUS

PDF

40.7 KB Created: 2020-08-13 23:16:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1912c157a191b0ee31e03cd069eee5d1 SHA-1: d87864f8f7355ebff32e321c064144614277defd SHA-256: eb35d124b48b9a8d3e74771efb9c49450b2f901f481f42f9e71fa1ecde937d9e
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body, though malformed, contains text related to 'calculus on manifolds pdf' and the authoring application, reinforcing the lure of finding a specific document.

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/wb?keyword=michael%20spivak%20calculus%20on%20manifolds%20pdf In PDF document text
    • http://sezilap.parkingsystems.be/uploads/1/3/2/6/132682883/fuwog.pdfIn PDF document text
    • http://files.speakdownbarriers.org/uploads/1/3/1/3/131381109/33a19f69c1022.pdfIn PDF document text
    • http://marepilus.forestcitycremation.com/uploads/1/3/1/4/131409090/gever.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/1/0431/0610/7552/files/48205616088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5357/2515/files/wogixefug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4615/0039/files/68614742923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3345/0903/files/81037769664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/miller_and_levine_biology_textbook_glossary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3599/8880/files/63084299885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/zifukixavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8553/7175/files/54588057490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/neluwevimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2535/7210/files/phantom_comics_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/vabufulalajavevobogux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9414/6200/files/rinilesifinanejujadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3786/5637/files/70418914414.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 1

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_off00006060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6060 5428 bytes
SHA-256: 75a80bd14d2b69e89456491c3868b2a1a1ac41c45ac72a3c62d95dd50ba191cf
font_01_sfnt_off000072b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B7 10244 bytes
SHA-256: db94748f1ace57b1c8dda43dca6730aa4ae31b93ddbb497d8d3bca91d45c95d7

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