Malicious PDF — malware analysis report

Static analysis result for SHA-256 a24846faa68c0c4f…

MALICIOUS

PDF

80.0 KB Created: 2021-02-03 19:58:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: fbc55d63b790b83c8510606b58f63f50 SHA-1: 0e164bf37d85d9edfc16301f697b88f433493467 SHA-256: a24846faa68c0c4f25bd5b8c136520850da884e2e6a2d2d40f7f695057c1a23c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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=gw2%20armorsmith%20guide%20450-%20500 PDF link annotation
    • https://mavezuwunokil.weebly.com/uploads/1/3/4/6/134627141/19388c303e2.pdfIn PDF document text
    • https://toroborelap.weebly.com/uploads/1/3/4/8/134867907/xowolesuranebed_pofuwula.pdfIn PDF document text
    • https://cdn.sqhk.co/mamevugixej/ib2hi1k/film_alien_armageddon_2011.pdfIn PDF document text
    • https://cdn.sqhk.co/motakolilo/SLhjhf4/paycell_haz_r_limit_artt_rma.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/Pqjd2F9/gegafisefowojasije.pdfIn PDF document text
    • http://giveaway2020.info/vazitijuluxusd7f9l.pdfIn PDF document text
    • http://world-wildshop.com/les_diffrents_types_de_centrales_lectriquesf05ct.pdfIn PDF document text
    • https://cdn.sqhk.co/vazoguzo/fmChdge/zagokugipomatulobarow.pdfIn PDF document text
    • http://rokexulom.22web.org/lagu_lily_cover_eltasya.pdfIn PDF document text
    • https://cdn.sqhk.co/zamodozitip/djh3aid/88554393258.pdfIn PDF document text
    • http://gratoram.site/jj_benitez_caballo_de_troya_8gfmg7.pdfIn PDF document text
    • https://cdn.sqhk.co/xowuzaseku/jbgfjfF/lekuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rolaxaja.rf.gd/risk_of_rain_2_cross_platform_multiplayer.pdfIn PDF document text
    • http://vukefuxi.epizy.com/adobe_character_animation_software_free.pdfIn PDF document text
    • http://vemevusakeke.epizy.com/80212901395.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_off0000fb34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB34 5848 bytes
SHA-256: 7d045f8226f7e7f5ed23d54dc37800efdb2f146414e25f4d7ef9e14f029d4984
font_01_sfnt_off00010f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F15 10560 bytes
SHA-256: 051a31564ac4a6a515cf559fb3de0a83458ca79880388f9a6a450eeb34f90869