Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ff7e97189debaf…

MALICIOUS

PDF

43.2 KB Created: 2020-08-04 17:43:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8e6bbbc2aed1c380bcd81a4d9d7d1ad SHA-1: 28fc42f6f9c41f0e7212a96b29e80f922389b123 SHA-256: c3ff7e97189debaf148a85856644c90570e1a732eb5730ba140aa2b3167cb09b
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary redirector URL being ttraff.com, which is known for malicious redirection. The document body also contains numerous links to external PDF files hosted on various domains, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicated maliciousness.

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=gis+tutorial+1+for+arcgis+pro+pdf In PDF document text
    • http://files.uccloverdale.org/uploads/1/3/1/3/131380951/848f9f0b2b5b43.pdfIn PDF document text
    • http://files.elaborateevents.ca/uploads/1/3/2/8/132814387/kujikosotixokoji.pdfIn PDF document text
    • http://files.kathleenhite.com/uploads/1/3/0/9/130969966/zuxud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9748/9561/files/visenisuxibabukuxakele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/pugojuxujetimumadisujimop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0579/6774/files/pimunidumozabadolox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72518400380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/vomunetavalixatojezupowip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9041/0658/files/ravivonesobadojeruvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/luxodapewova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4060/4313/files/papepipufaxaledezafoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/tegovafad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4368/4503/files/wavevexeluf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/fobojitunesuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/54676589433.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D03 5064 bytes
SHA-256: f1502b8b5e93b0c70d421bc3aab6f95d667c94dea395b8b70a33acbe16196932
font_01_sfnt_off00006e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E59 10252 bytes
SHA-256: b812aea732f770b317f562841f35d341e6c7f1e1ab5eb580d88343cf643fe9c8
font_02_sfnt_off0000915c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x915C 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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