Malicious PDF — malware analysis report

Static analysis result for SHA-256 802fb4d69b408dc0…

MALICIOUS

PDF

77.4 KB Created: 2021-03-24 23:34:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 009d6868e318905e3fd6ec90b7e6f333 SHA-1: 8b238d323b53d3de6786f116af4c6e086b077913 SHA-256: 802fb4d69b408dc07a082cbcf6d7e3a4c0014e82098eda0c74714015f7cb969d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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://dugedepap.ru/award?keyword=cardiac+glycosides+pdf PDF link annotation
    • https://cdn.sqhk.co/mekurapiw/ghiehdV/playgon_interactive_las_vegas_address.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469617/normal_601b449e3429b.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/clUchfB/integrated_camera_missing_from_device_manager_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/medipevagopu/sWhdkAU/juegos_de_plants_vs_zombies_3_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/fokofike/gf7gEot/varolejepesoniki.pdfIn PDF document text
    • https://cdn.sqhk.co/xovenekot/iV34edW/46607368254.pdfIn PDF document text
    • http://ribupisid.22web.org/dragon_ball_android_19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478137/normal_5feff687ee350.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403816/normal_5ffebed7adbc5.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/gcijTS5/bingo_like_casino_game_crossword_clue.pdfIn PDF document text
    • http://wuxevonatot.iblogger.org/fusionner_apple.pdfIn PDF document text
    • https://cdn.sqhk.co/zarejesorufo/eigibTf/create_google_docs_spreadsheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428052/normal_6028b8a8f1973.pdfIn PDF document text
    • https://cdn.sqhk.co/rilowikapaz/jjierid/luzujosedorew.pdfIn PDF document text
    • https://cdn.sqhk.co/renosopezare/2gcTD4R/92248525912.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500897/normal_605203a48e897.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/wemupajese/64869261845.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/cydia_tweaks_ios_12._4.pdfIn PDF document text
    • http://javasuk.epizy.com/43958800885.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/can_a_cdl_permit_be_renewed.pdfIn PDF document text
    • http://tumofif.rf.gd/34812929466.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/employee_timesheet_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/sid_meier_s_civilization_android_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_off0000f131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF131 5328 bytes
SHA-256: b52b71c954c628881612de93374674e815edfc7cdbb9bddb4a04781b41154802
font_01_sfnt_off00010368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10368 10648 bytes
SHA-256: dd0f5ff1706fd6dd11bf7fc3c34ea3293bb7593d35713a3994356e2aba8398f7

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