Malicious PDF — malware analysis report

Static analysis result for SHA-256 0986630a4f267188…

MALICIOUS

PDF

67.8 KB Created: 2021-02-07 02:16:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a7faa0ac87e9761daf8b3f701fd76acd SHA-1: 555d44a6484823cceca3e79b49e8f713a93a6031 SHA-256: 0986630a4f267188e52bca9e57c6254c8f7ff320efe41bad33ed6385aeece412
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://druttle.ru/wb?keyword=infection%20control%20guidelines%20in%20dentistry%20australia PDF link annotation
    • http://vknacruckalaikov123.xyz/sidolitikidisu65z6x.pdfIn PDF document text
    • http://ujjjrrrrr.space/crazy_taxi_gamespot1i50n.pdfIn PDF document text
    • http://wersita.fun/alanine_transaminase_alt_aspartate_transaminase_astq8cd4.pdfIn PDF document text
    • https://gamabisage.weebly.com/uploads/1/3/2/6/132681080/jipixutabamudo.pdfIn PDF document text
    • http://vuzatiriranune.22web.org/ambient_noise_app_for_android.pdfIn PDF document text
    • http://eurofamily.pro/60460671979taj9r.pdfIn PDF document text
    • https://surigogalabilix.weebly.com/uploads/1/3/5/9/135961506/zipuximutam_mogebadopavedaf_kukobumo_bivukirokesu.pdfIn PDF document text
    • https://sulomotosepotu.weebly.com/uploads/1/3/4/7/134744650/c2f5b3c1a.pdfIn PDF document text
    • https://sudarotabodubig.weebly.com/uploads/1/3/1/4/131407445/legutatuxu.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/kelageketisefuv/attendance_appraisal_form.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/monster_hunter_world_armor_guide.pdfIn PDF document text
    • http://gefuxexo.epizy.com/94488349661.pdfIn PDF document text
    • http://bajewilogofiro.epizy.com/spelling_worksheets_6th_grade.pdfIn PDF document text
    • http://fukesok.rf.gd/clash_of_clans_update_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/free_ringtone_for_samsung_a5.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_off0000cd92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD92 5228 bytes
SHA-256: e6757a532b2d5671f9cfce0912175a8bb99ec3b103ad99b63cfee5eced1e1b73
font_01_sfnt_off0000df74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF74 10172 bytes
SHA-256: 9428d4bd57b1def759d207a3b34041cfcaf5c187bc49e95e9a9b28df2b0c7bce