Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f23a083f93c8ec8…

MALICIOUS

PDF

66.1 KB Created: 2021-03-28 14:46:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7e8b90c37cc008b6dbfa7f9c27baacd5 SHA-1: 95d05dbf34f1806f52da6275ab1cf51989dd14e1 SHA-256: 0f23a083f93c8ec879f6a62ecf35ee04fdec783e87e780bcb081a00ffa34324c
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a remote-support lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=how+to+thread+kenmore+158 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388282/normal_605ac5c022992.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460070/normal_603d18e77b5b1.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/NifWijR/teamviewer_quicksupport_app_for_windows.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugewameru/FecXyig/95117075422.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416496/normal_5ffbb60a2374e.pdfIn PDF document text
    • https://cdn.sqhk.co/wejawujagi/gdOiijL/build_a_bear_near_me_cost.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495694/normal_603e91afb9101.pdfIn PDF document text
    • http://latencfsrt.space/how_long_to_smoke_a_pork_loin_in_a_masterbuilt_electric_smokerfld0y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450415/normal_5ff668136a24b.pdfIn PDF document text
    • https://cdn.sqhk.co/kufiremikaf/d1MhGwx/runezomelulazatogeg.pdfIn PDF document text
    • http://ruszaimclub.ru/salivil6jkq.pdfIn PDF document text
    • http://wejnpowk.space/93113338309vwqiq.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/toguvaju/acid_base_titration_worksheet_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/99272895601.pdfIn PDF document text
    • http://sugosabogakeg.rf.gd/lebarawa.pdfIn PDF document text
    • http://nokakegobowu.epizy.com/93319545083.pdfIn PDF document text
    • http://wiviwadikifeged.epizy.com/richard_nixon_watergate_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/32794129601.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/lilafajizasejinesokomapuf.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/free_cheetah_keyboard_mod_apk.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_off0000c8e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E7 5344 bytes
SHA-256: 4399cf5b10e056d765805abd6d2b40f88fd7c115fa6b94b5b4d11c935142b4b2
font_01_sfnt_off0000dafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFC 9384 bytes
SHA-256: a2aee17bea7b404c1eeeddeeff19b574b7151a6418d4d0f52f6ff2d54402cef7

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