Malicious PDF — malware analysis report

Static analysis result for SHA-256 f916135ca032a959…

MALICIOUS

PDF

48.5 KB Created: 2020-08-09 13:24:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0bb3b9d83c1915853047e101ee2fa18 SHA-1: c65c66b1f72cdca7792570e667dbccda4c94f21b SHA-256: f916135ca032a959a3f51472b7080c234123361255458ea03d6956a87bb58536
194 Risk Score

Malware Insights

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

This PDF document contains numerous links designed to manipulate search engine results and redirect users to a malicious URL. The primary redirector identified is 'https://ttraff.ru/pify?keyword=group+counseling+techniques+pdf', which is part of a link farm strategy. While no scripts were directly extracted, the PDF structure and embedded links indicate a phishing or SEO manipulation tactic, likely intended to lead users to further malicious content or compromise.

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=group+counseling+techniques+pdf In PDF document text
    • http://files.coachingwithcourtney.com/uploads/1/3/1/1/131164431/819d296e9fec2.pdfIn PDF document text
    • http://files.baijingbox.com/uploads/1/3/2/3/132303035/860376.pdfIn PDF document text
    • http://tikom.affordabletherapytoronto.com/uploads/1/3/0/8/130873826/ponojola_sefojetepovo_domofig.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/1/0432/6116/5723/files/6408530421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/rheumatoid_arthritis_hand_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/2798489414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6569/4613/files/mizunatipisabelojiliriget.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/pioneer_mosfet_50wx4_auxiliary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9888/0680/files/nuwotapusijasozal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0778/2557/files/monitoring_of_harmful_algal_blooms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niborenegukudokeregus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9897/1038/files/68747859881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7618/1404/files/pozemexasegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8921/8984/files/common_sense_book_by_soham_swami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0291/2168/files/blender_animation_tutorial_beginner.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 3

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_off00007f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4A 5364 bytes
SHA-256: 6c6308bd7606cf59478596dc49f3b4c0f059349b98896f86cb48101c380cfe26
font_01_sfnt_off0000917b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x917B 10412 bytes
SHA-256: 7df9e2942bebb1ca3b4f680a0d3c9cfd29efea2b12c0af636e60abfc9cf3cd0a

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