Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d5bf9976caddb1d…

MALICIOUS

PDF

48.6 KB Created: 2020-08-08 04:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6ed85cdd60ef9a0185a34b0cd92047f SHA-1: 64668e34adac19f2cbda694be16aa58bb0d0e4af SHA-256: 0d5bf9976caddb1d8e40a3e662dad4e478e6e9712daacb32cf1e46791e2c49ac
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) known for malicious activity. The document body, though obfuscated, contains a URL that is also present in the link farm, suggesting a coordinated effort to drive traffic to malicious sites. The ML classifier also 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=jesus+bleibet+meine+freude+pdf+organ In PDF document text
    • http://files.carolvoss.com/uploads/1/3/0/7/130738484/keken.pdfIn PDF document text
    • http://files.venablesgoldsmith.com/uploads/1/3/2/6/132682124/7546721.pdfIn PDF document text
    • http://files.lamarvetclinic.com/uploads/1/3/2/6/132681632/9962216.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/1/0431/2881/5783/files/88264288193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/83689383373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1674/files/4092909479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8917749958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8414/5049/files/mibitodajuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0898/1152/files/jejilag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3974/4419/files/xumirarupot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8474/1798/files/rumeditusuwusijumoguw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/senizinidakuxivopoviwig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/vupezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3983/9640/files/general_ability_test_questions_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/tozinoz.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000678e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x678E 5492 bytes
SHA-256: a3e01a4f96f156fc3b32cf4d9e1e97d6eca418491cf001cd629597ff45277548
font_01_sfnt_off00007a15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A15 11372 bytes
SHA-256: 6a5d5b061064ef431d87a9f7237236d613e246df9caceeb6522111058fa25ac2
font_02_sfnt_off00009fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FB2 16184 bytes
SHA-256: 75e56e6dc913dabd8b3c9cd5ea70025aeab0fff598b2ab24d9d660aeb9535195

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