Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a402b082f791df1…

MALICIOUS

PDF

88.8 KB Created: 2021-02-13 18:13:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ce6e394f9523bcf16bad4314a97c26d2 SHA-1: c11c2bffea91e9cffc41562cf0809cbd4b07c92a SHA-256: 2a402b082f791df14319df74a352c4b789d1b46f019c322df7f4c1dd1b77809f
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://maypoin.ru/wb?keyword=android%20studio%20constructor%20shortcut%20mac PDF link annotation
    • http://timurberg.ru/zafisezolabotewiruvnm9vi.pdfIn PDF document text
    • https://wodanosivowifig.weebly.com/uploads/1/3/4/5/134593279/845aef03.pdfIn PDF document text
    • https://xexiwimelogodit.weebly.com/uploads/1/3/4/5/134593193/tugepat.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/iaGjaNU/19374102770.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386830/normal_5fdef99f794f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459060/normal_600fe687f2ace.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5fd9d7fa2f674.pdfIn PDF document text
    • https://cdn.sqhk.co/riragimi/iUjfCbf/battlefield_4_commander_apk_data_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sixepatexup/gzricG9/red_vs_blue_season_17_church.pdfIn PDF document text
    • https://cdn.sqhk.co/zisujidixa/YhajaMq/z_nation_addy_bat.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxagoxoman/ONhe8IZ/big_east_women_s_basketball_tournament_bracket_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389823/normal_5fd788f67efc2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tewejifofobaj.rf.gd/christiane_f_soundtrack.pdfIn PDF document text
    • http://webezivoxubabo.epizy.com/mujadotixaw.pdfIn PDF document text
    • http://kazigolukujo.epizy.com/womajugazorowavom.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_off00011bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BFA 5136 bytes
SHA-256: ca5ed8ecaa8f0a17e3495f1104a92611431a0167184c9067140d83b62663890b
font_01_sfnt_off00012d40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D40 11968 bytes
SHA-256: 0bc76027d46df639e398dcbf1ec72c4e9548b146c2d626ef28257b89a67183cb

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