Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a99f579b2b44230…

MALICIOUS

PDF

80.8 KB Created: 2020-08-18 22:12:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b7b3ff2cd34c84c9e60db562024ed11 SHA-1: 8e0fb35b8a29653d49d84a63679a5cd0c540194d SHA-256: 6a99f579b2b442300f95157f0521fc8e15512d08e8c4383ef8eb25f1f1e6f00a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links, many of which point to an SEO redirector service (ttraff.com) that ultimately leads to other PDF files. The primary redirector URL, 'https://ttraff.com/pify?keyword=elliptic+curve+arithmetic+pdf', is flagged as malicious. This indicates a likely attempt to lure users into downloading potentially malicious content or visiting phishing sites under the guise of legitimate document downloads.

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=elliptic+curve+arithmetic+pdf In PDF document text
    • http://fifiwuse.dirksalomon.de/uploads/1/3/2/6/132681477/luxivoloxigepej_ziwaxelug_muburozenogixek_jazikal.pdfIn PDF document text
    • http://files.bokobowls.com/uploads/1/3/1/3/131379049/doremakifa.pdfIn PDF document text
    • http://mijive.paulwilkinselectricien.com/uploads/1/3/1/3/131379295/xavirasolakilox.pdfIn PDF document text
    • http://files.1686andco.com/uploads/1/3/1/4/131453793/tufiwikipuluzuza.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/1/0433/0687/7080/files/mogapusezonoxifetomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5782/4419/files/trigeminal_neuralgia_treatment_options.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0908/9447/files/93832688070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2010/7424/files/54153827004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4913/9880/files/bosubaxiwobumarut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8384/1190/files/lufodonemejitivapimuruj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/tikiwivowosopamulerevaxid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3782/4926/files/class_diagram_for_library_management_system.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA19 5236 bytes
SHA-256: c840a97b2c9002c6df0a51d05885d3ac9d456dbec2067e11f89b4305371d48d8
font_01_sfnt_off0000ebcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCF 16764 bytes
SHA-256: b26af8eeac28081fbe0ee735f1cb7efc67766743851a6e7b35dedf415ede8f84
font_02_sfnt_off00011fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD9 16468 bytes
SHA-256: 2ef574b91d421cb78bcaa27623ec04366e35faa6a631852c602942b36397ef52

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