Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06dc4a5aea23d7f…

MALICIOUS

PDF

44.9 KB Created: 2020-08-23 11:29:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f039af18c242cbbb63c4fdfe2b930512 SHA-1: ce48f029fc679c399e29f6d9dcb401d7dfbe0b67 SHA-256: e06dc4a5aea23d7f5a76af669467f8d5afdf782a6f9aec97b055bd98c1192f3a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing:Spearphishing Attachment T1204.002 Malicious File:Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is https://ttraff.ru/pify?keyword=budapest+convention+2001+pdf, which is likely used to redirect users to further malicious content. The document body contains obfuscated text and embedded URLs, reinforcing the malicious intent.

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=budapest+convention+2001+pdf In PDF document text
    • http://files.brownbarktreeservice.com/uploads/1/3/0/7/130776607/dojiw.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/1/0428/5222/1091/files/82844998262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3944/0543/files/32560738689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/anticancer_research_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4233/3084/files/16116965234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5163/9196/files/59125303512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3242/0262/files/ninad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/ai_type_keyboard_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2956/1495/files/the_chemistry_of_the_morita_baylis_hillman_reaction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2385/8845/files/92234038654.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7310 5456 bytes
SHA-256: c56b3adafb71a6e32cb0599fec6b36d42cd269e90849cb829ee3b2fffa6387e7
font_01_sfnt_off000085c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C0 9876 bytes
SHA-256: 43a830236c30e5c584b86e192787648ab86e3d46b9b1721831a030933bb66ae6

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