Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea8caea6f918cba2…

MALICIOUS

PDF

69.4 KB Created: 2021-02-24 20:56:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 759c8f41e9cde3b77b8a87706ae995c0 SHA-1: e66ac15a9d27a2a27dd6f5c002433a657b7a8db4 SHA-256: ea8caea6f918cba25b005e1b0a8a5f7ab51a6f0d83499289ee455c84533d4ee7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wb?keyword=distant%20journeys%20australia%20reviews PDF link annotation
    • https://cdn.sqhk.co/gasosivifug/4ii0Lhj/coffin_dance_meme_gif.pdfIn PDF document text
    • http://fikunigogijori.22web.org/i_m_yours_piano_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/aIhbJvO/pulsera_smart_samsung_galaxy_fit_lite.pdfIn PDF document text
    • https://vaxejoxumede.weebly.com/uploads/1/3/5/3/135346770/974157.pdfIn PDF document text
    • https://cdn.sqhk.co/salobosemiv/gd2heie/51950528206.pdfIn PDF document text
    • http://janetoxanonim.22web.org/91194982545.pdfIn PDF document text
    • http://dafusunefu.iblogger.org/judex_priest_ragnarok_mobile_guide.pdfIn PDF document text
    • http://xekepova.iblogger.org/dry_cleaning_flyer_template.pdfIn PDF document text
    • https://wazolupagod.weebly.com/uploads/1/3/0/7/130775763/b86f6811940.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/nKXgg1T/mustang_super_snake_vs_gt500.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pugorenorow.epizy.com/crystal_report_13._0._25.pdfIn PDF document text
    • http://lajuvinujako.rf.gd/because_of_winn_dixie_character_traits_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/fedowafukekirigugeko.pdfIn PDF document text
    • http://milosevogoza.rf.gd/61492331892.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/basic_computer_book.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_off0000d426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD426 5008 bytes
SHA-256: ba928a4f0ac7e7ee031496088c7df1080078dce55259e6c5b78b649894fc9861
font_01_sfnt_off0000e55f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE55F 10324 bytes
SHA-256: aa89df5fecc38ad9dda9167451c10b03d3d1aab0d0be386ae1fbf2c40bdde47e