Malicious PDF — malware analysis report

Static analysis result for SHA-256 7121c51cbb4683ca…

MALICIOUS

PDF

71.9 KB Created: 2021-02-26 18:09:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 24c9d5c697374c052241d29504443a7d SHA-1: f0b42c0866c573c8108d9cd60d3027ab92d2deae SHA-256: 7121c51cbb4683cace276ece0e798213ae0174e10179f44bd6a870823d7ea357
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/award?keyword=social+media+assistant+jobs+near+me PDF link annotation
    • http://helper-badges.com/everyone_loves_monster_game01oa7.pdfIn PDF document text
    • http://ludshop.xyz/jatum0p2fv.pdfIn PDF document text
    • https://cdn.sqhk.co/niririga/gZ9LBib/dazobopafowenorezu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375509/normal_601c617d349d8.pdfIn PDF document text
    • http://damalakin.22web.org/78820931253.pdfIn PDF document text
    • http://universityru.fun/biliim_teknolojileri_rehber_retmezctll.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414871/normal_6008d1094de9d.pdfIn PDF document text
    • http://bomaduworofa.medianewsonline.com/alcatel_a206g_user_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/hfhfjiH/hack_game_heroes_magic_war.pdfIn PDF document text
    • http://tejafugap.22web.org/cateye_strada_double_wireless_bike_computer.pdfIn PDF document text
    • https://cdn.sqhk.co/kizofapekeku/EHMmib6/17313020098.pdfIn PDF document text
    • http://itverys.space/38218529016wk5ju.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/baby_bjorn_potty_training_bundle.pdfIn PDF document text
    • https://cdn.sqhk.co/sebidurubuze/hi9hik7/24835090546.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vakakumiwizexoj.epizy.com/penn_state_university_information_systems.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/plantronics_wireless_headset_cs510_manual.pdfIn PDF document text
    • http://kititone.epizy.com/2906577518.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/celine_dion_titanic_music.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/3935057078.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_off0000db97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB97 5404 bytes
SHA-256: c4f57621c8d8fbfb174d531174d96398e38167556152fd65aa054480d8850b32
font_01_sfnt_off0000eddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDB 11200 bytes
SHA-256: 558aa0a4a24b16501da77b179eb9e541d05ffe481e7c462c2b2ce5453b77c458