Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc1623619beb6ff…

MALICIOUS

PDF

71.2 KB Created: 2021-02-11 11:41:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 66d97e1bc4426ed561d5a3a556b817e2 SHA-1: ff42070fbb0103f293177f65d8e8f32f9412e572 SHA-256: 3bc1623619beb6ffe3ba5e73515ddad0b76e6c91c178cc785a917a563cf4ea27
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://seumenha.ru/wb?keyword=cv%20template%20free%20%20docx PDF link annotation
    • https://cdn.sqhk.co/zavipudajose/crlghKD/goat_transport_simulator_farm_animal_goat_games.pdfIn PDF document text
    • https://cdn.sqhk.co/dovepomazeri/ifxific/calendar_2020_printable_cute.pdfIn PDF document text
    • https://rurajutudap.weebly.com/uploads/1/3/1/4/131437622/4403276.pdfIn PDF document text
    • https://fudanologakobur.weebly.com/uploads/1/3/5/3/135394175/13cc5a7d12a000.pdfIn PDF document text
    • https://nupuwuzom.weebly.com/uploads/1/3/1/4/131438231/sikegipiwugo.pdfIn PDF document text
    • https://cdn.sqhk.co/xinoxoxojib/hcie3m8/retro_phone_wallpaper_hd.pdfIn PDF document text
    • http://wajulosuju.22web.org/vazegut.pdfIn PDF document text
    • https://bovakexigi.weebly.com/uploads/1/3/5/3/135314068/62bb0a81.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/donake/wrong_luh_kel_song_pagalworld.pdfIn PDF document text
    • http://dukinudoxitisat.epizy.com/steam_stuck_allocating_disk_space.pdfIn PDF document text
    • http://lagamifex.epizy.com/18876314963.pdfIn PDF document text
    • http://gixisenusadat.rf.gd/kopefolozogirimefel.pdfIn PDF document text
    • http://puwomuf.rf.gd/berutomefakoxesuvakerok.pdfIn PDF document text
    • http://vejimugar.epizy.com/onedrive_android_sync_pictures.pdfIn PDF document text
    • http://senotujupube.epizy.com/classic_magic_eight_ball_answers.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_off0000da47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA47 5156 bytes
SHA-256: e609b6599c528c93174bfdb9b2ee7952d7726e117b99d99f2aaee403de08a98d
font_01_sfnt_off0000ebc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC4 10716 bytes
SHA-256: f63a868912397f7a13d45c145ec7b018ac9e300d5f65f6967d4a4aa6e6c8d656