Malicious PDF — malware analysis report

Static analysis result for SHA-256 467430ed2cf287c4…

MALICIOUS

PDF

41.0 KB Created: 2020-08-04 04:56:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c93542e3dcca520fc7d3682dd0455664 SHA-1: 3a0a93ca9f248f958974f90789810907666a788d SHA-256: 467430ed2cf287c4bdd8566e79ba9d5dfdff8b88860fd181067e24d318ab2f6b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm designed to redirect users to malicious content, masquerading as a free download for 'Encyclopedia Americana PDF'. The primary malicious URL identified is https://ttraff.ru/pify?keyword=encyclopedia+americana+pdf+free+download. The document body, though heavily obfuscated, contains references to this URL and numerous other PDF links, indicating a coordinated effort to distribute potentially harmful files.

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=encyclopedia+americana+pdf+free+download In PDF document text
    • http://files.ninatongthaispa.com/uploads/1/3/0/7/130739758/wofap.pdfIn PDF document text
    • http://files.davideastlee.com/uploads/1/3/0/9/130969166/35e0c239bf.pdfIn PDF document text
    • http://files.ardentrive.com/uploads/1/3/0/8/130813851/9950012.pdfIn PDF document text
    • http://files.carriagehousecinema.org/uploads/1/3/1/3/131381066/luburorep.pdfIn PDF document text
    • http://genafe.sepra-conference.org/uploads/1/3/1/4/131407511/5915411.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/1/0429/8348/9690/files/verilog_register_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/movizasutetawafuwasex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/31611293848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2717/7380/files/99261276965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3755/5868/files/35886209490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/44073421301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0913/8075/files/57226519930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3222/2615/files/35317450469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9348/9832/files/pirefafegov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/cfa_level_1_book_3_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1829/5195/files/69232876815.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: carriagehousecinema.org 5 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_off00006267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6267 5276 bytes
SHA-256: 430294101b005c7205a147f8cd97e4e77657cb307a14cd01d846e9e285d006b6
font_01_sfnt_off00007462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7462 10264 bytes
SHA-256: 99577bdc301f4c680ecc4a39804324e2323667cefe02485174e528c6b0a20393

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