Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4f02d4f65ee4765…

MALICIOUS

PDF

37.3 KB Created: 2020-08-14 14:22:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5e75e7fed140c7b4c9e2f719837a65b SHA-1: e6f919a54da121aecc366c2b7f42265f99b62298 SHA-256: c4f02d4f65ee476509f77b56945598b051ff7b1de8527315fbbb5daac917a846
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one pointing to a known malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a link farm, and the ML classifier strongly suggests maliciousness. The document body contains garbled text but includes the URL 'https://ttraff.ru/pify?keyword=chaining+day+j+cole', which is also listed as a malicious redirector. The primary attack pattern appears to be a link farm designed to distribute malicious content or traffic.

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=chaining+day+j+cole In PDF document text
    • http://banefu.melissacharlesart.com/uploads/1/3/0/7/130775085/604d9f31f7d.pdfIn PDF document text
    • http://files.sthelenparish.org/uploads/1/3/0/7/130776015/lulavumusika.pdfIn PDF document text
    • http://files.alpinedesignsmt.com/uploads/1/3/0/7/130776368/dogipasero-wawusumi.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/1/0428/8181/0595/files/wojuxawuzisidiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25696514874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3532/8661/files/40885846873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/95877181110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5774/9917/files/44256259038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9866/1279/files/23989181625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3137/8590/files/4956085654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2683/1784/files/98145164386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/pajasawezesar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3826/0899/files/95343482038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1984/4258/files/99855547888.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 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_off00005717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5717 5008 bytes
SHA-256: 392a641c51f68282f45493bb89398d93f3f308883a428723082ea44dd0f7d9fc
font_01_sfnt_off00006828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6828 9620 bytes
SHA-256: ee4bd60fff8afb2e67611a5456c19e0d81163afe38d4d6651e184b2db2ce9ff6

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