Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c96e20871c7c140…

MALICIOUS

PDF

65.3 KB Created: 2020-08-14 21:26:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29b8b9eb51fe29a504cb27d715df3195 SHA-1: 9dfc265022f47099ed929cde1be15af440d917a0 SHA-256: 7c96e20871c7c14087dfba826bff68c2f8ec3f4202542043fdd2e0bb0679db93
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains a reference to the same malicious URL, suggesting an attempt to trick users into downloading further content or visiting a malicious site. The ML classifier also 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.cc/pify?keyword=induction+and+deduction+english+worksheet In PDF document text
    • http://files.gwionraven.com/uploads/1/3/0/7/130739776/4916943.pdfIn PDF document text
    • http://files.thehealerinyouutah.com/uploads/1/3/1/1/131163851/vutimomizivuwepem.pdfIn PDF document text
    • http://pujofubud.hillcresteastpoint.org/uploads/1/3/1/4/131483281/06b8f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0528/6296/files/52772433577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6497/4742/files/diloxulab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4674/7803/files/moxamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7909/6728/files/project_budget_planning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/45546184867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5823/3493/files/carson_dellosa_math.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4642/1158/files/faithless_drifting_away_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3128/1312/files/biophilic_city.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9604/7783/files/cellist_of_sarajevo_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/betubemurosarizotezupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/50606398269.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b4d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4D0 5176 bytes
SHA-256: 339710ca0d4c5b25ccfd1895f6b71f177ba39666c6b190722c3d3206c7edc8ca
font_01_sfnt_off0000c664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC664 10352 bytes
SHA-256: 375ff46d5419ed44d89d5f93fb738ac9f7c8f8b54238ffaaaa87eae5d1b1c951
font_02_sfnt_off0000e9b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B3 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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