Malicious PDF — malware analysis report

Static analysis result for SHA-256 6de44f8ffd176912…

MALICIOUS

PDF

54.6 KB Created: 2020-08-02 13:20:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33988aa4dfef659ab0ab10648e18b79a SHA-1: 5a6fd15db2be52ea1020e96e79989142c89b9ca4 SHA-256: 6de44f8ffd1769124b5f4bbe3a228986b2bab0465c7ab937cdd3cd1c4cba673b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the redirector. This suggests the PDF is designed to distribute malicious content or lead users to phishing sites through a link farm.

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=arduino+pulse+width+modulation In PDF document text
    • http://files.decartsohio.org/uploads/1/3/0/9/130969188/ravogo.pdfIn PDF document text
    • http://files.iamfokis.com/uploads/1/3/1/4/131483053/wosesimulipekamufuda.pdfIn PDF document text
    • http://files.ggevents.us/uploads/1/3/1/4/131454255/90358.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/1/0438/8637/9163/files/list_docker_containers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/raxokadetavuzalotutozin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8235/7663/files/army_apft_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4290/6007/files/danuvirenavogorasepovune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3383/7224/files/bifijil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4556/1254/files/fubekeremosuvinalafab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/44452345412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7198/0198/files/tumekigowaxerurudol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2076/2783/files/79450982634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0250/6909/files/cobra_200_gtl_dx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6117/4684/files/pewukufezamopuboputivot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/57928596761.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 2

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_off0000981a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x981A 5280 bytes
SHA-256: 9d0b9fa4327b7052542c179ab104bd3e05f4da3969c7bd14eb4e843520f6f265
font_01_sfnt_off0000a9f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9F1 10304 bytes
SHA-256: 22206ac70e63e4f55929fa0811989ba8e880f7bc4c2dfdfbeff72336540b6fbe

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