Malicious PDF — malware analysis report

Static analysis result for SHA-256 8afd6ebfa8bebe6b…

MALICIOUS

PDF

76.5 KB Created: 2020-11-23 05:08:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: cb71c691bce47ac435f19100e8dc36c7 SHA-1: ec274b4989a1708a3be1a6d513299b11e9b3941e SHA-256: 8afd6ebfa8bebe6bf9cc11544b3e98160337cf6d3825688e0e038b518f877bb6
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/wb?keyword=android%20x86%20touchscreen%20driver PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/828e12cb-eacb-4162-9275-b53367b6d866/45584026633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4632e6a8-943d-44ab-aae2-5a7dad3f2e89/papidibomegoxemufiximo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5989f06b-6daa-4694-a608-bab462df1477/44901155844.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ee78548-1ad1-494f-afbd-6a02a290e9cd/19800400170.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/pulimejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f676fcb8-a03e-41e1-8132-d02d8caf4faa/kangal_rendum_pesuthey_song_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a8be345-d9c3-43f6-a471-9adbf2253dfc/9861140804.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da45ab1e-a935-4726-bbe2-11c56dcd8bf8/tifezotezagumilubota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2781504-4b6a-4f37-b379-afdbdd7e709a/gozejagokot.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/ap_physics_textbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d098b8aa-0ce7-4c1c-a361-082c4c3c4314/oregon_forest_fire_history_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87374a0d-2871-4cb6-921a-e96f49185870/loriridosalexakunagola.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/cauchy_euler_equation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2132daa-5361-47f4-a142-55978e817427/download_coldplay_fix_you_planetlagu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/330c53b3-caf5-42ae-a60f-7287462990af/astC3A9rix_et_obC3A9lix_streaming_hd.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_off0000ec55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC55 5248 bytes
SHA-256: ce331da370f86a5703109c90ec93e0a8e7e39168814972a93d3a71dd68bd6d32
font_01_sfnt_off0000fe3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3B 11432 bytes
SHA-256: 09f458082d413e426a61d4d30c488c41cad5d9949be56950bcfa658640d2b54e