Malicious PDF — malware analysis report

Static analysis result for SHA-256 98fed237f126e4fd…

MALICIOUS

PDF

39.0 KB Created: 2020-08-07 05:44:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 05df11424986f183c97847dd2f3dbc58 SHA-1: 38902469dddc80fcb33350dbb150a36a8afabbb1 SHA-256: 98fed237f126e4fd5d5caf28c7afe1c05abfb26b050b42e9c951ec7a2572802a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, including one to a known malicious redirector at `ttraff.cc`. The document body, though partially corrupted, suggests a lure for a free academic PDF, a common tactic for distributing malware. The presence of a malicious redirector indicates an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting. No scripts were extracted, but the PDF structure and embedded links strongly suggest a malicious intent.

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=abnormal+psychology+an+integrative+approach+8th+edition+free+pdf In PDF document text
    • http://dijema.pierrefinearts.com/uploads/1/3/1/4/131483083/5599105.pdfIn PDF document text
    • http://files.rina-bansuri.com/uploads/1/3/1/6/131606923/a73491a281c9.pdfIn PDF document text
    • http://voruf.rlcchouston.org/uploads/1/3/1/6/131636725/b9449b.pdfIn PDF document text
    • http://wedupufel.marcushedahl.net/uploads/1/3/1/1/131163590/3866220.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/1/0434/6331/1513/files/putazoxare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37629755229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/41380294769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/child_depression_questionnaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/fuwokekebikof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/sequence_and_series_formulas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6839/1577/files/caterpillar_operation_and_maintenance_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/i_can_t_hear_people_on_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/91379272517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/vipojadawegutujokaguluxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/laravel_should_you_test_every_validation_rule.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 7

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_off0000567e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x567E 6052 bytes
SHA-256: f515147b1b182842790a4ef1af0d1964211fdbbf376b24488bc0ae8f06fb9cdb
font_01_sfnt_off00006aef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEF 10584 bytes
SHA-256: 63c3140852db836e381493a69852880da2d3bc95bf1c7ce99a83938630e75240

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