Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a3ca813b8d0fb51…

MALICIOUS

PDF

40.4 KB Created: 2020-08-04 07:56:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2bf1e7469d273d9be022f37260abf289 SHA-1: c8af7d6c5a2c400c3797af0bafa84d0c246b71e5 SHA-256: 6a3ca813b8d0fb517ab10c61c1fc82733ef31374f51c36a9e1f4ea79f60669f5
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to an SEO redirector infrastructure. The primary malicious redirector URL is https://ttraff.ru/pify?keyword=a%25C5%259Fk%25C4%25B1m%25C4%25B1n+beden+dili+pdf, which likely serves as a lure for free downloads or other deceptive content. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to distribute malicious content broadly.

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=a%25C5%259Fk%25C4%25B1m%25C4%25B1n+beden+dili+pdf In PDF document text
    • http://files.tri-villagetrails.org/uploads/1/3/0/7/130775897/varonamugagavij.pdfIn PDF document text
    • http://files.steeplechasehomes.com/uploads/1/3/1/4/131453348/5119854.pdfIn PDF document text
    • http://files.repeatinitiative.org/uploads/1/3/1/3/131379231/buvizuzokutesaxi.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/1/0432/0333/0209/files/pazopedisivefavob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/wetavifijasanenovugamigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/zanosonixazexolalib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/6776492991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/rurus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4122/4869/files/pag_ibig_online_reg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7539/4977/files/wugivolagesow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/superkids_teacher_login.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85986419962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/17570598595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/39562464197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/tutorials_in_introductory_physics_homework_solutions.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51E6 5176 bytes
SHA-256: e367ef3efa80c124f7f791b9527537fb6c08d99e3dd7e386fa97b29dad810278
font_01_sfnt_off0000637b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637B 16216 bytes
SHA-256: 90c42d0d05ad4eb6e1f6860b94436c2b082edda09db75eb7d21ceba696307ffa

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