Malicious PDF — malware analysis report

Static analysis result for SHA-256 0af14a84cf8babf5…

MALICIOUS

PDF

76.4 KB Created: 2021-02-16 09:45:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9e8cfb609fc3af083b81047a8497485d SHA-1: 24ce2723fa61f30b31c5333a386fa6b0ef0b930c SHA-256: 0af14a84cf8babf51b8efbeeb3a6ba649df66dd6fcaf7d9f24149a6855caaaf0
206 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.003 Windows Command Shell T1059.001 PowerShell

The PDF document exhibits malicious characteristics, including being flagged by a machine learning classifier and ClamAV. It contains heuristics indicating it's a link farm on disposable hosting and lures users to copy/paste commands into shells, suggesting an attempt to trick users into executing malicious code. The presence of instructions for password-protected archives further supports a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://seumenha.ru/123?utm_term=how+to+reset+hikvision+wifi+camera+password PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460688/normal_5fcbd6c3597ab.pdfIn PDF document text
    • https://cdn.sqhk.co/tevunufoba/Vn0hegw/pubugudofo.pdfIn PDF document text
    • http://arendaavto.taxi/pokemon_chaos_black_rom_hack_downloaddvkji.pdfIn PDF document text
    • https://cdn.sqhk.co/zaperarori/gdvUibs/dominoes_game_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451737/normal_6009d0be2b4b6.pdfIn PDF document text
    • http://goduvide.22web.org/zujebu.pdfIn PDF document text
    • http://shoop-fl.ru/nioh_prestige_pointsgk4y5.pdfIn PDF document text
    • http://petajofap.22web.org/6085692907.pdfIn PDF document text
    • https://cdn.sqhk.co/puranajav/e2Qjbhi/titibululiwufam.pdfIn PDF document text
    • http://helplnstagramcontact6088756.com/89773691506box4z.pdfIn PDF document text
    • http://aires.fun/461122989500ngjm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378151/normal_60198ff8d2acd.pdfIn PDF document text
    • http://foyou.store/canales_ecuatorianos_en_vivo_apkzhjzf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fejobizife.epizy.com/84583022852.pdfIn PDF document text
    • http://pinogizege.rf.gd/how_to_check_your_iphone_battery_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/xewuruxunuxifukufujila.pdfIn PDF document text
    • http://gemimixobisuju.epizy.com/beauty_camera_selfie_apps.pdfIn PDF document text
    • http://pejulok.epizy.com/43783193518.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/6662920650.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_off0000eceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEB 5540 bytes
SHA-256: 0ade91120d4cd60118eed44c4c6ad288885ef8eeceb1ba212199cc227d3fee97
font_01_sfnt_off0000ffb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB2 10568 bytes
SHA-256: a1879acc2e973beb5cd1a5d36aa2ce67e0254febb6e95fa603e2256b57776120

Open this report in the interactive analyzer, or submit your own file for analysis.