Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae896e76fe2e848d…

MALICIOUS

PDF

77.1 KB Created: 2021-05-15 07:55:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: e72aed685eccabc938a62264b4e4a661 SHA-1: 395ae53d0749d90dd9098ab462809746f24dea2f SHA-256: ae896e76fe2e848d2bf79b5a8974add4906b8ac170b4f37f4b20459c95f16601
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to disposable domains and are likely used for phishing or scamming operations. The PDF structure and embedded links suggest it's part of a link farm designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/strik?utm_term=where+to+donate+old+baby+gear PDF link annotation
    • http://1xbet-registrat.site/1796498571048nf8.pdfIn PDF document text
    • https://cdn.sqhk.co/juselivo/aXifbge/fapelabe.pdfIn PDF document text
    • http://raftgjgr.space/79775398763wedvt.pdfIn PDF document text
    • http://reduslim-siteofficial.site/49220618431uana1.pdfIn PDF document text
    • https://cdn.sqhk.co/naxibibu/sgjhdih/osrs_ba_attacker_guide.pdfIn PDF document text
    • http://money-team.site/open_world_war_games_xbox_onecj0v5.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/gcvjcmJ/drive_on_theatre.pdfIn PDF document text
    • https://cdn.sqhk.co/rerunaropiz/ibgdifB/sedinakizodivepiwuvam.pdfIn PDF document text
    • https://cdn.sqhk.co/bezugisav/igrlhas/guitar_ringtones_malayalam.pdfIn PDF document text
    • http://deemonatrafik.xyz/82853648592f0cjn.pdfIn PDF document text
    • https://cdn.sqhk.co/xegapanasa/ghje5gc/video_alfy_saga_bikin_baper.pdfIn PDF document text
    • https://cdn.sqhk.co/mofisozulud/5awjjb1/ar_15_lightning_link_template_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/ig0Mgik/retetasisakedut.pdfIn PDF document text
    • http://topsol.xyz/has_starbucks_changed_their_cup_sizesrnd94.pdfIn PDF document text
    • https://cdn.sqhk.co/waxolulum/jcibfrI/kevodedotaduwuj.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/h5jbicz/sago_mini_airport_app.pdfIn PDF document text
    • https://cdn.sqhk.co/zikijemafeji/jhjihja/buckminsterfullerene_is_an_allotropic_form_of.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/gurafoga/how_to_view_candlestick_chart_in_robinhood.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/romaxepikeru.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/jitter_definicion_en_informatica.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/twilight_movie_download_in_tamil_isaimini.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_off0000efe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE2 5164 bytes
SHA-256: 3ff4b1a0523824a0a2e178f9ef982fb45f2203c13c45adc89b47c87f128bfdbb
font_01_sfnt_off0001017f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1017F 11060 bytes
SHA-256: e48df8b78812065afacb9bfe163a7fd98f6cc4dc03c05676e162d95adf726b86

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