Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bdd3c662adc833b…

MALICIOUS

PDF

50.4 KB Created: 2020-08-11 17:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a7c63693a9bc4492d51cce93685faf1 SHA-1: ac803efec30f58bfb3fd4cb90ae02a7a2dd4a8ce SHA-256: 6bdd3c662adc833bc2c72cb53c2cb3885960b0b2b7c8d7be9f2dc6d743f4c606
194 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links designed to redirect users to a link farm, ultimately leading to malicious infrastructure. The primary redirector URL is `https://ttraff.ru/pify?keyword=theological+dictionary+of+the+new+testament+volume+vi+pdf`. This technique is often used to disguise malicious links and evade detection. The ML classifier 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.ru/pify?keyword=theological+dictionary+of+the+new+testament+volume+vi+pdf In PDF document text
    • http://files.athos-studio.com/uploads/1/3/0/8/130813931/wirililabolekuxepi.pdfIn PDF document text
    • http://files.westonathletics.net/uploads/1/3/0/9/130969204/vovelokefozidedura.pdfIn PDF document text
    • http://files.centrocha.org/uploads/1/3/0/8/130873870/7918256.pdfIn PDF document text
    • http://files.theordernj.com/uploads/1/3/1/4/131454521/964805.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/1/0430/6229/6725/files/93998268709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/47781255506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9617/8849/files/xurupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/xoboxobut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/tokak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2567/9015/files/govazilir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4778/6398/files/instrumentation_amplifier_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/nursing_care_plan_of_cva_cerebrovascular_accident_filetype.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3645/0717/files/mri_brain_atlas_and_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/29852772564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/94386835568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3898/8709/files/nordictrack_a2350_manual.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 8

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_off000085f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F6 5772 bytes
SHA-256: 79afea24d547a82e4222235218d0c1c13c893a3a82e984ced4ea1016db5623f1
font_01_sfnt_off00009990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9990 10100 bytes
SHA-256: a94a9cfe194c2f50f02d115648833337346e6d8a2d153cde5c4d227bdd8bbd1e

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