Malicious PDF — malware analysis report

Static analysis result for SHA-256 c05ef7a0bfedf94c…

MALICIOUS

PDF

73.2 KB Created: 2021-02-24 19:06:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 93bf3a774e3e1626bc970996192e60a9 SHA-1: 0f2e8532d63cc290c78f53f2b3c77597afb18c73 SHA-256: c05ef7a0bfedf94cba1d535eb796694f6cc4925c14b9575f1f3c057c1a0681d7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://bologen.ru/award?keyword=hp+photosmart+7525+ink+system+failure PDF link annotation
    • http://byt-upak.ru/audi_q5_2018_service_manuala3xqu.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/eDRKshc/space_jam_2_trailer_date.pdfIn PDF document text
    • http://smilex.club/can_dental_crowns_be_repaired5ux08.pdfIn PDF document text
    • https://cdn.sqhk.co/tetolonul/UNhahg0/enemy_strike_2_unlimited_money_and_gold_download.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/ibLgejg/redinumew.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/lowrance_elite-7_ti2_met_active_imaging_3-in-1_transducer.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/5bO0jPR/warriors_kung_fu_films_best.pdfIn PDF document text
    • http://thedouche.xyz/98976248533muhft.pdfIn PDF document text
    • https://cdn.sqhk.co/jonimaze/hahaJsC/baptist_university_of_hong_kong_world_ranking.pdfIn PDF document text
    • https://cdn.sqhk.co/mifopanikil/idiiicZ/skyrock._fr_radio_en_direct.pdfIn PDF document text
    • http://robugipunebib.mygamesonline.org/who_was_the_first_martyr_to_be_killed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lumosaneja.onlinewebshop.net/90313599512.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/what_time_does_the_renaissance_fair_open.pdfIn PDF document text
    • http://lugirike.epizy.com/30137081756.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/demezinojaturafabu.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_off0000e034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE034 5604 bytes
SHA-256: e6596a9a1d10037481a4dfbf4ff8356ca93674a569e1cd228a9ca16c93edcb9b
font_01_sfnt_off0000f32e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32E 10720 bytes
SHA-256: 8a505e9a46642b12edf0d982126d64223a162c3b678d719c6357f66f5b346a23