Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f7ab7241a3d4c7…

MALICIOUS

PDF

78.0 KB Created: 2021-03-20 11:42:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 1d064fc41fb70bad3ffe5979a7172f58 SHA-1: 102cc6b909117865fe9d0c79767a02e0113dc59e SHA-256: d2f7ab7241a3d4c72e71621fd0dfffa40d7bf839f2aa12ffb52ba9a27ec441d8
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of external links, a common technique for SEO manipulation or distributing malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and numerous external URLs suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/wix?keyword=starbound+tenant+guide PDF link annotation
    • https://bufigolumixi.weebly.com/uploads/1/3/4/2/134234787/zezozeroxozufexujoj.pdfIn PDF document text
    • http://3bureaureport.info/journey_to_the_west_movie_streamingltjef.pdfIn PDF document text
    • https://wusitezuredov.weebly.com/uploads/1/3/5/3/135314125/7fb0bc93b.pdfIn PDF document text
    • https://cdn.sqhk.co/nimabugokofa/ijaFidn/play_songpop_2_online.pdfIn PDF document text
    • https://rababavuve.weebly.com/uploads/1/3/1/8/131871532/6211537.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/cz8hwAz/88306806469.pdfIn PDF document text
    • http://vinograd.io/ultimate_alliance_3_game_informer2kzfs.pdfIn PDF document text
    • http://fionainthefield.org/industrial_lawn_mower_hire_near_me7oopu.pdfIn PDF document text
    • http://palitra-cveta.ru/wexarorowojasofibedawomijkhlm.pdfIn PDF document text
    • https://rinixupikexem.weebly.com/uploads/1/3/4/0/134096042/nakeduluxat-gufip-miwatesuken-widazakox.pdfIn PDF document text
    • https://xovewelokajefi.weebly.com/uploads/1/3/4/8/134864882/liguvugoji-nixaj.pdfIn PDF document text
    • https://cdn.sqhk.co/mimufedu/yKohd1U/joker_mp3_ringtone_download_pagalworld.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/TFFghcO/hachiman_anime_season_3.pdfIn PDF document text
    • http://idealica-ituficiale.website/g_shock_rangeman_battery_dead6atx0.pdfIn PDF document text
    • http://help-igcopyright.xyz/524204275928ead7.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/rutufokedizon/apostrophe_rules_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/blanqueo_internacional_de_capitales.pdfIn PDF document text
    • https://9f5bcc56-a059-4f00-ae85-604acd6a3d2d.filesusr.com/ugd/ac9354_5acffb6ce5e44b78ac8a247454ffef41.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/game_of_thrones_season_2_episode_2_plot_summary.pdfIn PDF document text
    • https://1ebfeea1-7d02-43b8-8f0a-002c87bc7f75.filesusr.com/ugd/50dcf6_04f8074a49094ebab19182ae5599aa6d.pdf?index=trueIn PDF document text
    • https://c0b8f06b-4e98-4d3d-89ef-2f08caba629a.filesusr.com/ugd/0c8cc8_743cc1a784e643ff839752bc26443e62.pdf?index=trueIn 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_off0000f3da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DA 5024 bytes
SHA-256: 0965279889150d1ac00d9ab3d31edc5255d3793b920ea4afad5bdd0636de09d6
font_01_sfnt_off000104fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104FC 11048 bytes
SHA-256: 6ee8c86de44d818a2f53d14b0eff1fc47f8ecc3c7ced3b62016b0554be792f30