Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d960e1b71f5c9bc…

MALICIOUS

PDF

45.1 KB Created: 2020-08-01 16:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 821ba6303a18a2acfd2879cdd253a259 SHA-1: b91b9fa433907107dd800e9f7b6c44aa9a8153c4 SHA-256: 6d960e1b71f5c9bc9778f516f78a59cb0b0c75f0de8e60e9eb4865a31c06db43
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.ru). The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=big+oak+tree, which is also flagged by heuristics as a malicious redirector. The presence of numerous links suggests an attempt to create a link farm for SEO manipulation or to distribute malicious content via a phishing lure.

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=big+oak+tree In PDF document text
    • http://files.melindayoungmd.com/uploads/1/3/1/8/131858287/posimezusava.pdfIn PDF document text
    • http://files.mitchellhabitat.org/uploads/1/3/1/3/131384359/gifas.pdfIn PDF document text
    • http://files.kca-agtb.com/uploads/1/3/0/8/130813755/c00fdb07.pdfIn PDF document text
    • http://files.rbjewellery.co.uk/uploads/1/3/1/3/131383942/pexuzozuwuxofi_vexen_dojopariki.pdfIn PDF document text
    • http://files.northernlightsplastics.com/uploads/1/3/1/8/131856539/xenofavelifodidad.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/1/0431/7901/6349/files/22639744715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9041/0658/files/66276322798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3848/1311/files/84971284812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5319/4133/files/64993758835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/sekadonuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1641/1547/files/pagalezeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/kakuzakovejif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/morejafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6434/5255/files/41120767464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/79300776242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3487/7847/files/liniromujivejuwarunavur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/subaxivixutirawukozixanax.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
🗂 Part of campaign: mitchellhabitat.org 8 samples

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_off0000729e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x729E 4756 bytes
SHA-256: dad86043ce1b2b9a4b8b8691f557b29f956f6bd7e4961d689f19cc40258a1e01
font_01_sfnt_off000082e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E6 10744 bytes
SHA-256: 595597f21066d9ef3464259145067373e8744efe52b4060eb5a546754209c6be

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