Malicious PDF — malware analysis report

Static analysis result for SHA-256 644162a245bd1ae9…

MALICIOUS

PDF

96.1 KB Created: 2021-02-06 08:45:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 79730b2837aaa5e4f343408265a0dd6a SHA-1: f89c4fe1d6e7e66b2f1b613758f0df692e3110f6 SHA-256: 644162a245bd1ae9e96817fd60f6bb18ecc3e45408e508dadc1c21c22e71ba29
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://druttle.ru/wb?keyword=schedule%20delay%20analysis%20report PDF link annotation
    • https://gojatoxemoniro.weebly.com/uploads/1/3/4/8/134894745/xipidiwu.pdfIn PDF document text
    • http://wazumitizun.22web.org/guidebook_definition_in_business.pdfIn PDF document text
    • https://gubagomokugexat.weebly.com/uploads/1/3/3/9/133988684/mobeduwovixixofir.pdfIn PDF document text
    • https://zaroralovez.weebly.com/uploads/1/3/0/8/130814195/luraxozikunarubasid.pdfIn PDF document text
    • https://cdn.sqhk.co/mibaforetu/Qhichdy/beastie_bay_magic_word.pdfIn PDF document text
    • http://juwijosij.iblogger.org/nfl_fantasy_cheat_sheets_ppr.pdfIn PDF document text
    • https://cdn.sqhk.co/puwetudul/XSSck8O/wonebisedepezuparad.pdfIn PDF document text
    • https://cdn.sqhk.co/wexufenu/caEXifK/25663775172.pdfIn PDF document text
    • https://cdn.sqhk.co/vasegodesazu/icftLsG/durufogoxebepabizoz.pdfIn PDF document text
    • https://cdn.sqhk.co/xatijafuwami/gghhEgc/love_your_husband_book.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/iiDghjg/dubavo.pdfIn PDF document text
    • https://zokilare.weebly.com/uploads/1/3/4/7/134767859/9282759.pdfIn PDF document text
    • https://cdn.sqhk.co/fopalixogul/1RfiFY3/xexetazogubigegidigobew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vetetipusel.rf.gd/bengali_movie_sathi_amar_song.pdfIn PDF document text
    • http://siduxosezuk.rf.gd/79702718737.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_off00013ae6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AE6 5364 bytes
SHA-256: cab3c3cbc59a05c0436283b3215873b907d3c7e601ada3326931b2489d9933f8
font_01_sfnt_off00014d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D26 11328 bytes
SHA-256: a28ffab7945ce3f5764f20a8c320400798796d320c4cca671b80bd53af2cabc6