Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab9addd7565abd98…

MALICIOUS

PDF

94.9 KB Created: 2021-03-27 22:42:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: a49e52998dee56b74c5d9edbe0029d0d SHA-1: 0a3f323c976b471b1af19d13191b05498eaeed64 SHA-256: ab9addd7565abd9804ea2c4e3210de5db4dad74a94157295ddc532c36630d750
166 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File Execution: Malicious File

This PDF document was flagged by ClamAV as malicious and by an ML classifier. It contains numerous external URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. Crucially, a heuristic indicates the document instructs the user to copy and paste content into a shell, a common technique to trick users into executing malicious commands.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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
  • 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://midufefew.ru/wix?keyword=cracking+the+code+of+life+video+questions+worksheet+answer+key PDF link annotation
    • http://detonic-italy.website/access_database_templates_2010u8tes.pdfIn PDF document text
    • http://bilapak.66ghz.com/nowisiviwuzipurosonozedug.pdfIn PDF document text
    • https://takatika.weebly.com/uploads/1/3/4/6/134605824/dibuzigoveb-dosumulotabaxab-wujuxuwa-ribudedafotajig.pdfIn PDF document text
    • http://mebets.xyz/jenomuvurivelinunasadodoozld.pdfIn PDF document text
    • http://ru-en.xyz/58424570877pnsib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_605d94b944dd6.pdfIn PDF document text
    • http://naturapple.space/powerapps_app_templateseuaq0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426814/normal_5fd8a13c98cc4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393362/normal_60014a88c2a81.pdfIn PDF document text
    • http://lighterusb24.site/fobuvakufelupetuseveaq6k.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/d4e8e.pdfIn PDF document text
    • https://pebufaso.weebly.com/uploads/1/3/5/4/135400671/mavuzikajasasis_delugekakupoda_nibol.pdfIn PDF document text
    • https://finiruxadaral.weebly.com/uploads/1/3/2/6/132680938/nexodupitid.pdfIn PDF document text
    • http://aycotoro5.xyz/29724108302s7sxt.pdfIn PDF document text
    • https://vipelunova.weebly.com/uploads/1/3/2/7/132712034/ginezipepapevevib.pdfIn PDF document text
    • http://giveaway2020.info/steps_of_service_trainingzglle.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470698/normal_5fe137cc1313a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368229/normal_5fd6644389c72.pdfIn PDF document text
    • http://koolmaxt.online/rizazejijikixisuvjrpf.pdfIn PDF document text
    • http://pro-komp-master.website/nozukasuvavcsq60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408879/normal_6016ac7eb0e1d.pdfIn PDF document text
    • http://podarokinsta365.site/spelling_numbers_worksheethnhd8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://jowevoxajez.epizy.com/zinukenapupa.pdfIn PDF document text
    • http://figejadinopi.rf.gd/can_you_renew_your_drivers_license_at_a_kiosk.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD5 2828 bytes
SHA-256: b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a
font_01_sfnt_off000126d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126D0 5632 bytes
SHA-256: cc385ba20c649d9bd6659a9e37fd8dad6e7eb59c5d262eeddb76b8b098eac7d1
font_02_sfnt_off00013a08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A08 10188 bytes
SHA-256: a9038981e5ff917925fa69a372f0acac113dbc4f42d8ac06170df09bd45115c2
font_03_sfnt_off00015c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C94 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378