Malicious PDF — malware analysis report

Static analysis result for SHA-256 cca79b332940ee87…

MALICIOUS

PDF

59.4 KB Created: 2020-10-12 07:11:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e61bbe3fe9f6c1b7594f1818b8ec7a34 SHA-1: 0cac62aef430fbd1aba5a7ee12d3ee4b19034148 SHA-256: cca79b332940ee879d14f8d4aaddb9508127542e53fb591a18156daf60e534cb
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://gettraff.ru/strik?keyword=platinum+god+gungeon In PDF document text
    • http://gorosawix.usamwv.com/uploads/1/3/1/1/131164174/f9aa5ba.pdfIn PDF document text
    • http://files.waramaughospitalityco.com/uploads/1/3/1/3/131379477/filizoxij.pdfIn PDF document text
    • http://files.dcoi-solutions.com/uploads/1/3/1/8/131856590/bepiwuseni_ruwugobiz_kuzurobatabuw.pdfIn PDF document text
    • http://files.politicsfortomorrow.eu/uploads/1/3/0/7/130739156/vorazate_bitasemil.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://uploads.strikinglycdn.com/files/e4229985-3c28-47f4-9512-74ff45873c10/titelup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f6dfd9e-bcdc-4894-9670-7bf2325a8227/sopig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35e06025-6753-44fe-a567-48168d56e5c6/43056539919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3b94763-d939-46b8-a3ca-f23d9fe74698/saduniwazumatogagov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/one_up_on_wall_street_ebook_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8886/2614/files/47425122585.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FFC 4756 bytes
SHA-256: ce41fd84dae5c7e3a2ce46dc3f2e94f2244ad6ee904a4c09aa74e8f0fb69c3d9
font_01_sfnt_off0000b006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB006 10256 bytes
SHA-256: ef9812f1da0202089beaee259bfe949a764e003f346e8aa76565da0993de3cd3
font_02_sfnt_off0000d30b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3