Malicious PDF — malware analysis report

Static analysis result for SHA-256 96aa1405b42f955d…

MALICIOUS

PDF

42.5 KB Created: 2020-08-25 07:14:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0f238cabb353ed2a14a72228f337d554 SHA-1: 736ea7ed0ba5215e24b2a11fbc63f79125b466fe SHA-256: 96aa1405b42f955d593b78ed59819775cef4fd408f0646a3a8a31f3dcb246cd8
194 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are SEO-optimized and point to Shopify domains. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'halibut fishing guides' and the URLs themselves suggest a lure to potentially malicious content. The ML classifier strongly indicated maliciousness.

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.ru/pify?keyword=halibut+fishing+guides+in+homer+alaska In PDF document text
    • http://files.curetypeone.com/uploads/1/3/1/3/131380121/dadf492e7ec13e.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/1/0429/1421/8143/files/watch_avengers_online_for_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7766/4929/files/61694474824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/78119995933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1249/7305/files/sleep_apnea_patient_handout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9037/8901/files/3267136505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5002/2550/files/34209912916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7945/7173/files/application_of_probability_in_computer_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2670/8640/files/29426138734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0704/8860/files/vetalorexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4615/6960/files/mevefinizakexomeponavow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8083/5482/files/bavapowemofixozanimagebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12729031526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0180/6997/files/85260078949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/jupexosubitebenifopabupes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4244/6231/files/vadobaxokotodowi.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 8

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_off00006721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6721 5484 bytes
SHA-256: f212170cf64a24468cd0c57991edb742e9e2d37fccefbae07910a9d065451e28
font_01_sfnt_off0000798b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798B 10240 bytes
SHA-256: b68b6c68af6f6a569970b8742bb08882e82a5bd9a855f673db7d59cb91d29081

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