Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f1abb93296e312c…

MALICIOUS

PDF

71.6 KB Created: 2021-01-19 09:46:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: efa744876a288f7b7c9d532a7c34d2ab SHA-1: d0986b0c8f624f58254f615efc28588b7bcde08d SHA-256: 7f1abb93296e312c81ade0c35f780f99a6caa1562bbdeffa2329b77d15277cf4
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://trafffe.ru/wb?keyword=cash%20gift%20tax%20free%20uk PDF link annotation
    • https://cdn.sqhk.co/nonuripot/sgegev6/37177103620.pdfIn PDF document text
    • https://cdn.sqhk.co/tupipitijil/gdgjxID/tomefujizavolu.pdfIn PDF document text
    • https://cdn.sqhk.co/vizoxaxijojo/2NaXLv8/good_sunset_views_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/lafugafeniki/hesORX5/classic_spaceship_arcade_games.pdfIn PDF document text
    • https://cdn.sqhk.co/rowojazur/iRggiey/hidden_files_windows_10_not_show.pdfIn PDF document text
    • https://site-1224402.mozfiles.com/files/1224402/minapepem.pdfIn PDF document text
    • https://tadinitalu.weebly.com/uploads/1/3/4/7/134744808/lapopusadamesa.pdfIn PDF document text
    • https://jukamonasob.weebly.com/uploads/1/3/0/7/130740128/9658929.pdfIn PDF document text
    • https://cdn.sqhk.co/lazuxorus/eEquqq3/hidden_object_treasure_hunt_adventure_games.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/jbZ3AJG/3654376668.pdfIn PDF document text
    • https://bumobuzeki.weebly.com/uploads/1/3/4/4/134477779/wazekif_jewajawanidis_pawatalepigi.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/mofep.pdfIn PDF document text
    • https://variwigegepug.weebly.com/uploads/1/3/4/3/134348450/c4370f97469d.pdfIn PDF document text
    • https://timonuwek.weebly.com/uploads/1/3/4/3/134383578/lanupufevowad.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/jhhcyCw/electronic_pilot_logbook_app.pdfIn PDF document text
    • https://zonebudufekepok.weebly.com/uploads/1/3/4/3/134382159/latefi.pdfIn PDF document text
    • https://site-1191130.mozfiles.com/files/1191130/bass_boosted_car_music_mix_2018_download.pdfIn PDF document text
    • https://zugasemoz.weebly.com/uploads/1/3/4/5/134593751/furefozep.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_off0000dc14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC14 5032 bytes
SHA-256: 8bcd7bc3cd5a838d383af19950b4fc1f590d686ab03798ce34112b3f04d5b653
font_01_sfnt_off0000ed35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED35 10660 bytes
SHA-256: 3b40abcf8bb3dcf0066353ca2fd188b31ab458bdb15b5ba490357ec59638ffa6

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