Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2d4988ab3ef28fe…

MALICIOUS

PDF

43.0 KB Created: 2020-08-03 22:04:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99a7d68ed882edffe9ab889de435c707 SHA-1: 7a11936877746b8b43c203c0acd6805e98ce89f3 SHA-256: d2d4988ab3ef28fe4a13e278d2066c0fba01b9939080b6cf43f2410d7f3cfa39
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, with a critical heuristic firing indicating that one of these links points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=data+clustering+algorithms+and+applications+pdf', which is also flagged as a malicious redirector. This suggests the primary purpose of the PDF is to 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.com/pify?keyword=data+clustering+algorithms+and+applications+pdf In PDF document text
    • http://files.fteacadia.com/uploads/1/3/0/7/130775229/5833085.pdfIn PDF document text
    • http://files.highlightminiatures.com/uploads/1/3/0/7/130775484/kavopegunudorop-xugiwowaxulos-garijijixakib-toronu.pdfIn PDF document text
    • http://files.grittsfarm.com/uploads/1/3/0/7/130740118/a6151d148ac843.pdfIn PDF document text
    • http://files.stockela.com/uploads/1/3/2/6/132681863/sajotudozoga_rakazik_jivukivefu_fiwakekezib.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/1/0437/2991/1957/files/af_90t_capsule_filling_machine_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/zironawigifijirikule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0635/1771/files/tegopunorufuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/15012409902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/98220287007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/nisugomadobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7057/8070/files/principles_of_geotechnical_engineering_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0015/8632/files/87833138374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5795/4464/files/rotisurotujada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/filaxirugafimabiwomiluwip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6042/7928/files/94974493032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4726/3128/files/12840774611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8847/8365/files/serizutawovolevigof.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_off00006968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6968 5568 bytes
SHA-256: 570db14f9e4ea0fd461693c69c31a6238deb60c0775b3a5f389bf7405c3933c3
font_01_sfnt_off00007c2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2C 10168 bytes
SHA-256: 246b8d052b8289832fc9a18931f71930b3f9a831c6bc93b742a2968d361e4c10

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