Malicious PDF — malware analysis report

Static analysis result for SHA-256 f994c067d84b4761…

MALICIOUS

PDF

70.8 KB Created: 2021-02-12 20:47:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0275d67ec18f73df865979bef7d6d0dc SHA-1: 5aca499ee7ffdcc0240c9907340b78133ff6397e SHA-256: f994c067d84b4761c0ae564f353cdedbc6ddee8bb8eb2a5fba8c29ccaf431931
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/wix?keyword=st+mark%2527s+watertown+youtube PDF link annotation
    • https://bosudire.weebly.com/uploads/1/3/4/4/134456289/9fe07b39c3.pdfIn PDF document text
    • https://penogefuf.weebly.com/uploads/1/3/2/7/132740618/8486a12ebee.pdfIn PDF document text
    • https://cdn.sqhk.co/manoxixo/fje7hau/beard_club_growth_vitamin_spray.pdfIn PDF document text
    • https://cdn.sqhk.co/zisujidixa/fpgdhdo/dash_panel_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/lebogomatoze/o08hbWm/fpv_freerider_full_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/surikuzezun/hghfhfC/91146188277.pdfIn PDF document text
    • http://exemplpusj.com/17528385837ztmzi.pdfIn PDF document text
    • http://insta-sale.site/poxevm2eul.pdfIn PDF document text
    • https://cdn.sqhk.co/ginijetemepa/YhjZheW/809135936.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/gfhciju/neon_drive_switch.pdfIn PDF document text
    • https://kotezoxeruv.weebly.com/uploads/1/3/5/3/135345651/govubefibe.pdfIn PDF document text
    • https://pebuzifidam.weebly.com/uploads/1/3/2/8/132815752/eb2121f3.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
    • http://sabuxixu.epizy.com/chiari_malformation_types_ppt.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_off0000cb7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB7E 5168 bytes
SHA-256: 9f9e93e86e172511c0cbd5f728c0d5b531bf11bf661db31e6072bb23e1045ab3
font_01_sfnt_off0000dd01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD01 10232 bytes
SHA-256: 62de8c6bee58be7200eaf9098bbf9c0b29f70f140e8013e095fcf52a5b2c2a43
font_02_sfnt_off00010011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10011 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378