Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2caf647149ee210…

MALICIOUS

PDF

56.4 KB Created: 2020-08-05 17:19:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2c7f66891b25a3b928740684c281bf0 SHA-1: 17f2f526d2a3a7f604c008e72115598ed612cde9 SHA-256: f2caf647149ee210cfb9348ae4e35aba563e454e0e0c7c04ddd600f43dc6d627
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link disguised as a free download for CCNA exam questions, which redirects to malicious infrastructure at ttraff.cc. The document also hosts a large number of links to other PDFs, likely for SEO manipulation to improve search engine ranking for malicious content. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=free+download+ccna+exam+questions+and+answers+pdf In PDF document text
    • http://files.gamecockcop.com/uploads/1/3/0/8/130874513/sotifajama-duvidizelu-vuroju.pdfIn PDF document text
    • http://purow.halasboutique.com/uploads/1/3/1/1/131164100/lopiwedu_fepogowu_pujazedu_bogakebob.pdfIn PDF document text
    • http://files.southmaydtxcourt.com/uploads/1/3/0/7/130775934/c10d396d783e8.pdfIn PDF document text
    • http://files.njoutdooradventures.com/uploads/1/3/0/7/130775727/dasodufovawe.pdfIn PDF document text
    • http://files.newseedspriory.org/uploads/1/3/1/4/131438708/5534735.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/1/0433/0687/7080/files/fejekav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29876283886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/nigoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7522/1144/files/nexawojunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/fabomariritowugenaxobuped.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/50609438574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/komenej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4836/9309/files/puradevesagijatoluv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4394/5628/files/76493344022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/ap_calculus_prep_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70838758317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0749/0717/files/wiggle_sort_ii.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_off00008d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D64 5424 bytes
SHA-256: aeb0142cbf5852e723f31c797b51372f32a896d2d82e006fb0e7cf7cec686330
font_01_sfnt_off00009fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD3 11252 bytes
SHA-256: 758956096e0fed1152fd7250ef0be3958fd4a007f06d02e9c94507752e72e1a5
font_02_sfnt_off0000c622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC622 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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