Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86501b46a5d63f8…

MALICIOUS

PDF

61.6 KB Created: 2020-08-23 12:41:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b14b565d6974f0980013a6d99998e71b SHA-1: ba9728d11c2e487a886cfa25920d0ef4e1edaf57 SHA-256: a86501b46a5d63f8aac6b06709818cbde552e79a85c37a299f5707c26790671f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=bleacher+report+europa+league+live+stream'. This URL is presented within the document body, suggesting an attempt to trick the user into clicking it. The presence of a large number of external PDF links also indicates a link farm, often used for SEO manipulation or distributing malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=bleacher+report+europa+league+live+stream In PDF document text
    • http://files.tobaccofreewisconsin.org/uploads/1/3/0/9/130969452/62f2dc2523.pdfIn PDF document text
    • http://files.hpccdenver.org/uploads/1/3/1/4/131438423/2598777.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/1/0439/4231/4152/files/pdf_to_dwg_converter_free_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4659/0872/files/byod_policy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9648/9632/files/bevuxogibazukerilimadabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/20988415272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8980/5731/files/splashtop_wired_xdisplay_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/vampire_the_masquerade_v20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17844710077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/jejutisomopewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4575/4792/files/biology_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/vafuxufubifobofefemeruju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/fozifoduselude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9313/9364/files/balonaxejegowomov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/46765946605.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 8

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

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6942 6980 bytes
SHA-256: 5cf2d71805dacebb66062bf6258afbe9a0446ac0769031fe7917c58091c69427
font_01_sfnt_off00007ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE0 3136 bytes
SHA-256: d7a74a8f7f5b6061d1704e49d55b25e97137b941398fa138ccd077d4d208d331
font_02_sfnt_off0000860c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x860C 5456 bytes
SHA-256: e63666fb29f06b395a962f9772865448f5d9a494327f1a39a20d1759875a8cc0
font_03_sfnt_off00009875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9875 6252 bytes
SHA-256: 55a2fdf1196eb9abba28cbeb90153f433d4cd9b1bb923654eba726d70342e418
font_04_sfnt_off0000ac19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC19 10840 bytes
SHA-256: 1d889aa4105f5a87beabedb3144ed86c65783beab614e81bcc8cba4daa04dd9f
font_05_sfnt_off0000d17a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD17A 16392 bytes
SHA-256: b1a8d8a55104966784973262ca87b601cfebcee1e0a8464929735f537deb94ad

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