Malicious PDF — malware analysis report

Static analysis result for SHA-256 0738a0f98bd7a09a…

MALICIOUS

PDF

38.5 KB Created: 2020-08-04 16:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac8b4a3519453ee390707ece3f638f95 SHA-1: c98f4d752d289e071111b9683641b9604376d86f SHA-256: 0738a0f98bd7a09a18be12fd9fc07541baa11f8cbeff04cd543692063c1a6fb6
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector infrastructure at 'ttraff.com'. This redirector is used in conjunction with SEO tactics to lure victims with seemingly legitimate content like 'Catholic university of malawi pdf'. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or scam attempt.

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=catholic+university+of+malawi+pdf In PDF document text
    • http://files.joycecollinscoaching.com/uploads/1/3/0/8/130813108/1512003.pdfIn PDF document text
    • http://files.frankminnella.com/uploads/1/3/0/8/130814706/c5d8d69400883b.pdfIn PDF document text
    • http://files.josuedersoir.com/uploads/1/3/1/3/131383771/889144.pdfIn PDF document text
    • http://files.matiastautimez.com/uploads/1/3/1/3/131379296/bulimifufi-supidilowirobup-pikedubedu.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/1/0437/3485/9941/files/68779635820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/pawawavoretukega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8108/0738/files/82679571643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6512/1699/files/off_line_casino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5482/9463/files/2020_calendar_printable_nz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/ridetesewadul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8237/4561/files/kubemetojilorakipep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8260/4963/files/viwapurazabivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/25218340243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/64970198862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/wivenowadidigatuzefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6521/3089/files/63183715083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7361/7576/files/36596661723.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 2

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_off00005759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5759 5556 bytes
SHA-256: a46509f7ac849a155c31a4e0bd00ef7c365b2780b9b0e2a688859c8e84655158
font_01_sfnt_off00006a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2D 10128 bytes
SHA-256: 17688c77aef7071e6fb9a330fa0bd5bff1ab5f3ae9729779ba05c162f3732bc8

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