Malicious PDF — malware analysis report

Static analysis result for SHA-256 99ffee4da0ecbcc5…

MALICIOUS

PDF

41.6 KB Created: 2020-08-28 00:00:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0c335f1e89a32f2a6263e3ddb818435 SHA-1: 2a88ce5c3d37fdc7a24912d4ddd913f0ca23d7c4 SHA-256: 99ffee4da0ecbcc5560a771d235b983400cf30cbd8daaca658df20bd00e4f092
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=ktm+workshop+manual+pdf', is designed to lure users into clicking it. The document also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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=ktm+workshop+manual+pdf In PDF document text
    • http://tosewaw.eventsforyou.net/uploads/1/3/1/6/131637306/3233535.pdfIn PDF document text
    • http://files.atomicagevintage.com/uploads/1/3/0/9/130969211/minenodinujizu_lexusujiv.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/1/0432/0700/0219/files/wurubitajoket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4163/5997/files/gafawuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8073/6150/files/staphylococcus_aureus_infection.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6034/7551/files/sodokobofuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/wrong_turn_2_movie_in_isaidub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/towosoxorekufuxasaxivat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/lebolonununoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/japuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6827/7415/files/40379556777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rosetotirumeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9352/4634/files/hormonal_control_of_calcium_metabolism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6457/files/music_collaboration_agreement.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 6

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_off00005610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5610 5124 bytes
SHA-256: 180e677a951836c97f05509fe08fa960d2939ca70ba2b3e3505ba156f5d0e71d
font_01_sfnt_off00006755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6755 10440 bytes
SHA-256: 3ec83888c77bae235111fb4350fe9ebdcdf6dec2d8667ec2b2b3e99155137f52
font_02_sfnt_off00008b0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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