Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc07d9adfeafe501…

MALICIOUS

PDF

35.3 KB Created: 2020-11-06 13:04:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: c7ca0881a701eac30df917b9cbfdab20 SHA-1: bf629844fb8c8d2cd182ee1687188efc403d9ce2 SHA-256: cc07d9adfeafe501910b89a8b5a592206feaa3b77c88aa64006a1fc4a44d8d2e
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffine.ru/123?keyword=chicago+med+torrents In PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/9707984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409806/normal_5fa304c325f74.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c78b5e7-2871-4385-8ffc-8d7bc0a54612/fajupobeloxoja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9105c9a3-e845-4c71-9296-05276ea03976/tafafadinisozajawa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/351faf36-bdf2-4b5c-b7c1-cc6b20d07bbf/29125225268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd8d140f-e085-4dae-9f41-031a79b436f1/dinosaur_train_einiosaurus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4c09460-576a-4e04-ac61-9a2817e6a7fe/asterix_et_obelix_mission_cleopatre_streaming.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/beanie_boo_birthdays_in_june.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15cf02fa-affa-4568-b391-2d5946a9921d/26784135189.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51ae2f74-ca11-4592-bfd6-e468ac80bcf5/free_manual_j.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/laser_x_instructions.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48CC 5224 bytes
SHA-256: 8d620f0c17826f9870e366a3b01c62ba87e32f5d2cfe47b850e32277d30edc8f
font_01_sfnt_off00005a5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5E 11208 bytes
SHA-256: cd35da32d897d28dbe09619ad78ccf607acc843e7c6b80cfc2706a41188737e3