Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cde8d46cba1481b…

MALICIOUS

PDF

67.6 KB Created: 2021-02-01 22:04:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9df29d97e24cb6bcd51f1a9b6b8d8bd2 SHA-1: fe7f489918d336b24416fc559c434b63f4d6ba0e SHA-256: 5cde8d46cba1481b21f7b692f064003d4c2c941fde1c2821ed376701a2a72bf0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=article+html+template PDF link annotation
    • http://f13x.xyz/arena_closer_hackdo25u.pdfIn PDF document text
    • http://taxutipepavij.iblogger.org/criminal_justice_system_reform.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403817/normal_5fe831026b90c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496378/normal_6007c24f4bedc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498883/normal_6007b21d99b7b.pdfIn PDF document text
    • http://iwhite.space/37537068738qjtsd.pdfIn PDF document text
    • http://shop-profildoors.ru/nocrop_photo_editor_square_pic_square_fittert9rgb.pdfIn PDF document text
    • http://kepovimobezozo.iblogger.org/budazamaxagajoresigovetu.pdfIn PDF document text
    • http://beamorem.com/idle_battles_heroes_vs_zombies_hackkekrm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528260/normal_5fe8606b97782.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/37676527544.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/ruxakukifilelukoxazapi.pdfIn PDF document text
    • http://riporem.epizy.com/the_american_chestnut_readworks_answer_key.pdfIn PDF document text
    • http://ruwapebubori.epizy.com/minions_3_full_movie_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/83766358696.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_off0000ccbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCBD 4984 bytes
SHA-256: 8fc70ff1aea9d11e4b5dc77aa37946c8fa003d60436f2caec13222b1cd2e883f
font_01_sfnt_off0000dd7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD7F 10504 bytes
SHA-256: 0aa495c95fcf9f72c559d9daca630451cf2cf758c649a2dd232a3768cfc60101