Malicious PDF — malware analysis report

Static analysis result for SHA-256 1925c167c9b62c11…

MALICIOUS

PDF

76.3 KB Created: 2021-02-28 17:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a569c1412ed792a3d95a0a5ffa128284 SHA-1: f3042d0b459cfdcd1a36e2934d4551da230ee026 SHA-256: 1925c167c9b62c11ddf3e36ace351be2aa1f965cf548c44541956c4a2990b321
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://vilenefex.ru/123?utm_term=mobile+car+air+conditioning+service+melbourne PDF link annotation
    • http://clubstore.pro/black_hack_rpg_reviewiix6c.pdfIn PDF document text
    • http://vidclips.design/age_problems_aptitude_shortcuts_downloadcv7ev.pdfIn PDF document text
    • http://studyweb.site/esports_jersey_template_freevd75i.pdfIn PDF document text
    • https://cdn.sqhk.co/xatuxazaz/mhajhJ3/star_wars_kotor_2_cheats_not_working.pdfIn PDF document text
    • http://kedejivebirago.iblogger.org/bunker_hill_security_camera_manual_62367.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447646/normal_5fd657b8068e4.pdfIn PDF document text
    • https://cdn.sqhk.co/ribobujir/jfijwja/77146246692.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490523/normal_60337ec3520c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470232/normal_60201a33f1593.pdfIn PDF document text
    • http://ketorebagibof.22web.org/internet_explorer_for_mac_2018_microsoft.pdfIn PDF document text
    • http://lidujer.22web.org/auld_lang_syne_piano_sheet_music_advanced.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/Us5rFjd/73589742262.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwuxa/ihJjaAn/towew.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/bomifabipi/oxford_thesaurus_apk.pdfIn PDF document text
    • http://rimiwomo.epizy.com/24259834801.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/1st_grade_sight_words_printable_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/20802277450.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/jowen.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_off0000ecbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBB 5464 bytes
SHA-256: c108348b04d0b661b4242fcbd40f2f4789adfc31c38b1832139f316484680ae9
font_01_sfnt_off0000ff4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4D 10756 bytes
SHA-256: 680839c7a1b7cfb273f6fcedae17236162716e765b4ac5bed3692042907b09c2