Malicious PDF — malware analysis report

Static analysis result for SHA-256 75a5e3d088eb9140…

MALICIOUS

PDF

50.7 KB Created: 2020-08-17 13:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 59841eef6f181217a2875d0892be2adf SHA-1: 75958bff4cb940c88a9b87c221dec33cc98fe6ae SHA-256: 75a5e3d088eb91403e2c3d1ee897016f97bba576003fec7327d2eda9f290449a
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains references to educational material and the malicious URL, suggesting a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence further support this assessment.

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=algonquin+college+library+and+information+technician In PDF document text
    • http://files.holytrinitylowmoor.com/uploads/1/3/1/3/131398369/7433288.pdfIn PDF document text
    • http://files.daupo.com/uploads/1/3/2/8/132815008/sakarek.pdfIn PDF document text
    • http://files.jasonmoliterno.com/uploads/1/3/2/8/132815123/jotafuxipigivav-pejiwavojosaxu.pdfIn PDF document text
    • http://davug.pvgtf.com/uploads/1/3/2/6/132695818/dipifuvuxezasev-muxopokag-pezezajuk.pdfIn PDF document text
    • http://files.inspirednourishment.ca/uploads/1/3/1/6/131607062/josudabe-levaziwise-saronalasak.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/1/0433/2650/5128/files/math_worksheets_grade_4_angles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4141/4555/files/vozakimajodoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5947/6630/files/lockout_tagout_steps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5970/8058/files/visimakegavuzulafava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/0604/6886/files/42705465928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/application_vnd_ms_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7482/7941/files/43643909248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/21195382628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1603/6249/files/wii_u_usb_helper_unpack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0807/1592/files/34143631688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2682/4859/files/jordan_canonical_form_of_a_matrix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7198/7098/files/the_castle_of_cagliostro_kissanime.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 6

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_off000085ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AE 5616 bytes
SHA-256: 59e35ea97d519077cc2c5bc60e5ff48e2cc353349f4494aa977e9e76171fa3ec
font_01_sfnt_off0000989a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x989A 10764 bytes
SHA-256: 665ed7073f177913557be6b1cc1a5b14451d9034d1b7030137496ac4cfd0fb81

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