Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae88dc4c6236e08…

MALICIOUS

PDF

76.9 KB Created: 2021-02-23 05:37:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 03c579d5c86e29d1cd9910d915f45a23 SHA-1: 2e6ae41c4d30bb3bdb52cfb859b68098e7d21378 SHA-256: 7ae88dc4c6236e08a1354a1d17d858b7670340d5cf9309df886f08885134d180
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/wix?keyword=canon+mg2520+printer+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/bosamame/oujaCkT/free_live_wallpaper_download_for_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/tifobebe/gjhiiZI/big_game_hunter_2010_videos.pdfIn PDF document text
    • http://flathead.us/mikajtoeqj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447916/normal_602631e43f0db.pdfIn PDF document text
    • https://cdn.sqhk.co/zizaratijiga/yVNihia/sidotixewebelavu.pdfIn PDF document text
    • http://1offpark.xyz/senoxirevikoxevixak9ufgk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447631/normal_6004944d50a39.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/ghageig/87151054397.pdfIn PDF document text
    • http://uuuuull.space/golidizdf0zp.pdfIn PDF document text
    • https://zeberafuduzugag.weebly.com/uploads/1/3/2/6/132682167/0d481a4fe.pdfIn PDF document text
    • http://govnososal.xyz/62662025143l3yyl.pdfIn PDF document text
    • http://apelsins.space/72539073453dycwn.pdfIn PDF document text
    • https://cdn.sqhk.co/nejisakatok/67Fiihb/zafumozajokedixopaduboni.pdfIn PDF document text
    • http://ogranifruit.space/cost_of_private_piano_lessons_uk4go9x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370304/normal_602ed43b30f26.pdfIn PDF document text
    • http://vipadminler.org/14754922848zgva.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407983/normal_5fc56e587e8d1.pdfIn PDF document text
    • http://likelid.xyz/physical_chemistry_principles_and_applications_in_biological_sciences_5th_edition9oyvn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ea28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA28 5488 bytes
SHA-256: eb1965203eb1242fd598996131aaa2599a352be2bee7be61d9ff645e2b824cda
font_01_sfnt_off0000fcbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCBF 13032 bytes
SHA-256: 88a4b14213f5c93c479b41b85c720aa0052e8a021d1321fcdfe56bd1227967cc