Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eb786ff1b37ad94…

MALICIOUS

PDF

39.1 KB Created: 2020-08-22 10:16:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f723701546d28a7114104e631bde655b SHA-1: 15e422059613c9e7ae4919a63ade94cf5170d157 SHA-256: 6eb786ff1b37ad94017f85e01ff2d189d66c6b29e2b4462af3af81c452c41021
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body and heuristics indicate a "link farm" or "SEO redirector" tactic, suggesting the intent is to drive traffic to malicious sites or distribute further malware under the guise of free downloads. The ML classifier strongly supports the malicious verdict.

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=clinical+examination+of+farm+animals+free In PDF document text
    • http://zowuxanag.beautyindiversity.org/uploads/1/3/2/3/132303027/7424224.pdfIn PDF document text
    • http://sedes.burritoprincess.com/uploads/1/3/0/7/130776065/da52bd3d8e831e.pdfIn PDF document text
    • http://files.spiritfire.com/uploads/1/3/0/7/130775375/caf5e.pdfIn PDF document text
    • http://kebutot.bodywisdommelaniepalm.com/uploads/1/3/2/3/132303195/2813673.pdfIn PDF document text
    • http://bizelevad.walnutgroveauction.com/uploads/1/3/1/8/131856158/xeledujuxafa.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/1/0430/6518/0314/files/49616752016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8917/3411/files/ib_biology_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9024/6822/files/bsf_head_constable_ro_rm_previous_year_question_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4248/7972/files/dukomebip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7690/2309/files/administrative_position_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0644/1110/files/network_traffic_monitoring_tools.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2040/9256/files/colliers_houston_office_market_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0842/5123/files/96775017858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/83241162596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9743/7848/files/xijaxaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3908/8022/files/teaching_about_the_holy_spirit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4002/6273/files/certified_scrum_master_practice_test.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 4

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_off00005ccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CCD 5000 bytes
SHA-256: f4ff05e873bd621a2624e0e2c4d6a6b04652b087347e73af8bd8054fbe8d7378
font_01_sfnt_off00006db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB1 9888 bytes
SHA-256: 556bbcb076b7e66cebcd2818d1be4ba42c5fbf1f41ea54b89aa81ac145829668

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