Malicious PDF — malware analysis report

Static analysis result for SHA-256 c03adcf255eaa249…

MALICIOUS

PDF

69.7 KB Created: 2021-02-23 18:52:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 96707a0cb79c92ab92f57209e0b5c0cd SHA-1: a8df7f3e3a486baa27e9394cd69339e8be0cdf25 SHA-256: c03adcf255eaa249511387cb46257dc40ec74ea8d94a8b9542af663be06f5398
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://bologen.ru/wix?keyword=tahoe+forum+for+sale PDF link annotation
    • https://cdn.sqhk.co/lopokevofoti/cgfhfwT/clash_of_clans_account_recovery.pdfIn PDF document text
    • https://zupufirelerige.weebly.com/uploads/1/3/0/9/130969681/64da2.pdfIn PDF document text
    • https://cdn.sqhk.co/zanaforare/gjo8Hif/the_onion_knife_launcher.pdfIn PDF document text
    • http://artemk.ru/23485888901rgyav.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/Vy6f8VE/building_services_group_jobs.pdfIn PDF document text
    • http://spoonnumberone.xyz/kalakekanolagabivudjr2b5.pdfIn PDF document text
    • https://cdn.sqhk.co/nejisakatok/xYYhahi/pancake_maker_bed_bath_and_beyond.pdfIn PDF document text
    • https://cdn.sqhk.co/javukapegami/bZGjcyM/29133426487.pdfIn PDF document text
    • https://bitiwinelezom.weebly.com/uploads/1/3/1/8/131856531/wibew.pdfIn PDF document text
    • http://mimavuxaxokit.iblogger.org/backgammon_game_free.pdfIn PDF document text
    • https://cdn.sqhk.co/mejabutumu/3xIhpnY/6139858374.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://desutowifikabek.rf.gd/14828610046.pdfIn PDF document text
    • http://figedid.rf.gd/63050158620.pdfIn PDF document text
    • http://budibebolimuxo.rf.gd/me_gozare_en_tu_presencia_jehova_letra_marcos_barrientos.pdfIn PDF document text
    • http://jorowoti.epizy.com/wedding_anniversary_songs_in_telugu_free.pdfIn PDF document text
    • http://roraxekabitapoz.rf.gd/hypertension_guidelines_american_heart_association.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F6 4604 bytes
SHA-256: 0b46eeb792edeaa09ab5cd4a3f3672129c81c55d6608f5d34acc3d7cd74d8030
font_01_sfnt_off0000d79b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD79B 10640 bytes
SHA-256: beb844eed5db3771c8b3d62fbe02f64067aefbcae7cae6eb8e9a218cc08a2479
font_02_sfnt_off0000fbf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF4 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333