Malicious PDF — malware analysis report

Static analysis result for SHA-256 344631d09fe14548…

MALICIOUS

PDF

43.2 KB Created: 2020-07-29 19:12:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a44c6374c9ea5cd8943ca7488e3087f2 SHA-1: d2a7968573ddf2dc09a72f26ffea014f568488d8 SHA-256: 344631d09fe145483a5579e53cae2cdea17f18d4789f6dec3ecf08dec34c65ae
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to redirect users to external resources, masquerading as free downloadable content. The primary redirector URL, 'https://ttraff.com/pify?keyword=clinical+chemistry+bishop+6th+edition+free+pdf', is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'clinical chemistry bishop 6th edition free pdf', reinforcing the phishing pretext. 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.com/pify?keyword=clinical+chemistry+bishop+6th+edition+free+pdf In PDF document text
    • http://files.svitakwood.com/uploads/1/3/1/4/131407890/eecba7.pdfIn PDF document text
    • http://files.michellexiao.net/uploads/1/3/1/6/131607346/xugex-xotosuzunixovir-kuvareduxifo-fufetatarifu.pdfIn PDF document text
    • http://files.massagerevelstokeayla.com/uploads/1/3/1/4/131483336/38244db497f.pdfIn PDF document text
    • http://files.lolosvegan.com/uploads/1/3/0/7/130738596/liliboladurigaw-mikujugobom.pdfIn PDF document text
    • http://files.evanbrayder.com/uploads/1/3/1/8/131856574/rumogomazirapefevi.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/1/0430/1645/4305/files/votazin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0875/3827/files/pibawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5525/0598/files/boluwibunuziwexafos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65105912314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3218/9860/files/jotum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8039/9513/files/zaludupukavawatamet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1363/6259/files/meguxetimitazepivok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2589/0466/files/puguwoweluzazuvogipaxulut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3031/5159/files/xuxalurugubejuvapipumed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5306/2046/files/pawamezagitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0048/7332/files/rubexemi.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_off0000681a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x681A 5600 bytes
SHA-256: f0a506c7354f2e8545344153cddac9b6db6c0de86a9de175c3674913fbb813a7
font_01_sfnt_off00007ae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE4 10808 bytes
SHA-256: 9bcc47068abefb9978fbaf96ca7a42b933184ac6edd355aea347616dcafd14c8

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