Malicious PDF — malware analysis report

Static analysis result for SHA-256 7664a00464723ce0…

MALICIOUS

PDF

66.1 KB Created: 2020-07-28 05:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10b02b05a067aa88722413576f4da602 SHA-1: ce4d96cf8a42a565e87b78fb917caf47c3d4bb9b SHA-256: 7664a00464723ce01e0e89b4e0ce3a68e53cc9ff76e73da3a4c6d983afc137d5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirector links and a link farm for SEO manipulation, all pointing towards a phishing or scam attempt. The embedded URL and the heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically highlight the malicious redirector at ttraff.ru. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to exploit vulnerabilities or redirect users to malicious sites.

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=biodegradation+pdf+file In PDF document text
    • http://files.111-ed.com/uploads/1/3/0/9/130969897/wugunovigapopenikedi.pdfIn PDF document text
    • http://files.michellehutchinsonart.com/uploads/1/3/0/7/130775441/3071664.pdfIn PDF document text
    • http://files.coragulachouse.com/uploads/1/3/1/0/131070331/ziparabifob-veduvozal-fuzabepi-wejuzesemuboze.pdfIn PDF document text
    • http://files.teresaruchdesigns.com/uploads/1/3/1/4/131438055/870135.pdfIn PDF document text
    • http://files.kingsporthorses.com/uploads/1/3/1/3/131383553/1742861.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/1/0439/1917/9931/files/jofuwenub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4956/6886/files/2528537199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/82711438204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2990/2998/files/zatuladigaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0491/8941/files/90811836608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5661/0976/files/sozirijogojiwadibixugapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81274949660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8787/8549/files/5249945998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4947/6518/files/30780673629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4991/7333/files/11863501892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/zusokapozedutazujobugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7845/1351/files/jaxoxugu.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_off0000c614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC614 4868 bytes
SHA-256: 3b516eb69eabdd4bc51ceef83c61997f993966fc2788c946481ef9ca836db14a
font_01_sfnt_off0000d6aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6AA 10632 bytes
SHA-256: d7406d2e259b4a31f1407f88fcccaf9b14252ff41c19654c5c2e77edcac820e5

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