Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7fca10ddd4f0098…

MALICIOUS

PDF

74.4 KB Created: 2021-03-02 13:36:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a1bd7c9ab80aed4c68ed084b212bc6f3 SHA-1: 41fc18a8baac2dd4d833dacf4f69b4242a3d7327 SHA-256: d7fca10ddd4f009883a3f5b56a66f49a98f63b8c8574cd363c4f78463bb175aa
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://kuzutuzo.ru/award?keyword=how+to+use+photoshop+cc+2018+for+beginners PDF link annotation
    • http://nopuvobetag.mygamesonline.org/lasers_and_feelings.pdfIn PDF document text
    • https://tukobigerokigab.weebly.com/uploads/1/3/4/6/134653943/lilupizeza-bafetuvoz-xurovikoxetedox.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/how_to_say_goodbye_before_you_die_quotes.pdfIn PDF document text
    • https://cdn.sqhk.co/zerumowo/at7stgT/eric_s_new_york_pizza.pdfIn PDF document text
    • https://cdn.sqhk.co/taduzotul/ahiggii/54550556130.pdfIn PDF document text
    • https://wikoxunorature.weebly.com/uploads/1/3/5/9/135968981/7097059.pdfIn PDF document text
    • http://gadetebes.sportsontheweb.net/hp_envy_4500_e-all-in-one_driver_windows_10.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/kaviporinamanijozun.pdfIn PDF document text
    • https://pikarazumubujon.weebly.com/uploads/1/3/1/4/131452816/8037804.pdfIn PDF document text
    • https://cdn.sqhk.co/kemomonil/hjjishc/32273410026.pdfIn PDF document text
    • http://pufivuziviv.mypressonline.com/dynamic_systems_modeling_simulation_and_control_craig_a._kluever.pdfIn PDF document text
    • https://cdn.sqhk.co/jozazixefuf/6Evvgd6/61352338917.pdfIn PDF document text
    • https://cdn.sqhk.co/soxobiwefili/mOjgjfO/driving_school_academy_2017_android_oyun_club.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/wupiwupiwot/cours_capteur_de_vitesse.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/homonyms_worksheets_for_grade_7.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_off0000e510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE510 5748 bytes
SHA-256: a4c17ea5e3cc4efe0e2d80d83e5e9a120e16248694bfbde5740301729a004c46
font_01_sfnt_off0000f8c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C3 10504 bytes
SHA-256: ce4659eac106738db90df3d9e6d874a58576a279559c622c1fb35e7b546143c3

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