Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d984d91dfdca83…

MALICIOUS

PDF

74.6 KB Created: 2021-01-24 13:46:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 22d0986f5bdb274edb1bdf9e886c4308 SHA-1: 24cba993b56e2ecba842032355ca2dd4694b788c SHA-256: d0d984d91dfdca83ecb72a898dfb431636e2d918e07b88256035f57e88d4a591
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://leonvi.ru/wb?keyword=okta%20stock%20forecast PDF link annotation
    • https://cdn.sqhk.co/fovuxugo/hbBdjia/how_to_have_multiple_microsoft_teams_windows_open.pdfIn PDF document text
    • https://duresanu.weebly.com/uploads/1/3/5/3/135334900/severekefoworib.pdfIn PDF document text
    • http://kodamup.22web.org/candy_camera_latest_mod_apk.pdfIn PDF document text
    • https://pipamoximiketo.weebly.com/uploads/1/3/0/9/130969724/duzekavowab.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/g5GTihe/solar_system_scale_model_online.pdfIn PDF document text
    • https://girawosanisab.weebly.com/uploads/1/3/0/7/130740609/9c11f5.pdfIn PDF document text
    • https://gamupizesusaza.weebly.com/uploads/1/3/1/3/131398140/dijowepise.pdfIn PDF document text
    • http://liolika-rsya.ru/dwight_yoakam_suspicious_minds_chordsh6qng.pdfIn PDF document text
    • https://lonapumerupa.weebly.com/uploads/1/3/4/8/134853684/2938568.pdfIn PDF document text
    • https://vususutuf.weebly.com/uploads/1/3/4/6/134634118/4242616.pdfIn PDF document text
    • https://bopuxokefira.weebly.com/uploads/1/3/5/3/135300507/0ccfe9a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://falalovoxiwada.epizy.com/wirowomeruk.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/character_creation_free_android_games.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/vudixumuvimisis.pdfIn PDF document text
    • http://kujafugakare.epizy.com/miwidodezebarodedokub.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_off0000e54a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54A 4936 bytes
SHA-256: 4e08cdb55eed5cbd2830c80f8d64b8f429cc2d38523f1c7bce5ff14108175adc
font_01_sfnt_off0000f622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF622 11672 bytes
SHA-256: 48476893c0ab27da2ab8a4bdc2fa58886a11947c20f2106f197392abc78817b7