Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d950dc4f4d85f7…

MALICIOUS

PDF

45.8 KB Created: 2020-08-03 16:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0b0ff5ea814705c175205cf130acf69 SHA-1: 611e54b5f05324fed375153e7feaca2b1b30539f SHA-256: 11d950dc4f4d85f77ad2e935b118a30785f00b242fee89ea9294d1f38da5b382
194 Risk Score

Malware Insights

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

This PDF file contains numerous links to external resources, masquerading as a "vector calculus questions and answers pdf". The primary link directs to a malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The ML classifier strongly indicated maliciousness, and the presence of a link farm heuristic further supports a malicious intent, likely for phishing or malware distribution.

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=vector+calculus+questions+and+answers+pdf In PDF document text
    • http://files.theclasswebsite.org/uploads/1/3/1/4/131407655/79219fc519e12.pdfIn PDF document text
    • http://files.mickylynnsroom.com/uploads/1/3/1/8/131856121/kidufopixutelotir.pdfIn PDF document text
    • http://files.tusgart.com/uploads/1/3/1/8/131857494/4435140.pdfIn PDF document text
    • http://files.baltimoreschool.net/uploads/1/3/1/8/131872032/2312105.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/1/0430/0655/8359/files/64728062397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9770/2046/files/92423268992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/chevy_cruze_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8944/4510/files/83246476206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5671/6183/files/sims_2_resolution_stuck_on_800x600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6582/7747/files/01_198_437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/jaribasigotixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7897/4616/files/i_walked_across_an_empty_land.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2859/4344/files/54236060237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9792/2461/files/paxedukevururaxogife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3865/3086/files/piezo_buzzer.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_off00006fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDA 5332 bytes
SHA-256: 219d1922fd6886cee9b3ba0d213b56e89035f63e1a3dca4f4e8e9be5a5c018d8
font_01_sfnt_off00008220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8220 12560 bytes
SHA-256: b8aca1e565eed5033d1612f706d1ff3a5bcc4369760ec2da18f4b01493c120b3

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