Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e7d4915e25e9641…

MALICIOUS

PDF

76.8 KB Created: 2021-03-19 00:16:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1dff5072b86e4f4a2ffab3a7dbbdb73d SHA-1: 7fa5b4ba1a54822d4117619615ad999ca434e2e6 SHA-256: 4e7d4915e25e9641a6417c82d95be2a41d5c7d61478081b1b456c3472a157ef2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'ponafet.ru', which is a strong indicator of a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/wix?keyword=grandparents+as+parents+knoxville+tn
    • https://cdn-cms.f-static.net/uploads/4455196/normal_6035878fbe2e5.pdf
    • https://cdn.sqhk.co/xefilelo/ihHhfQa/68617613933.pdf
    • https://cdn.sqhk.co/vonirosidejo/cHjebWn/likavuzuxeledorew.pdf
    • http://rimarilomikozu.medianewsonline.com/gta_vice_city_cheat_book_download.pdf
    • https://cdn.sqhk.co/fipimomozuk/rQFeShd/southern_butter_pound_cake_recipes_from_scratch.pdf
    • https://cdn.sqhk.co/vizinifum/Yiijdgd/virginia_green_new_deal_2020.pdf
    • https://cdn.sqhk.co/jemitaku/c7icYji/xuduvetelebilaju.pdf
    • https://cdn.sqhk.co/vumivatuvi/aG8iehj/nidetugakebi.pdf
    • https://cdn.sqhk.co/resozasevej/QKiiMgf/best_deal_on_ninja_coffee_maker.pdf
    • https://cdn.sqhk.co/dorusafe/ighbD2U/tadazotofi.pdf
    • http://jaxagogilexet.sportsontheweb.net/75715770515.pdf
    • https://static.s123-cdn-static.com/uploads/4471096/normal_5ff1dab311aa9.pdf
    • http://mesanezedid.mypressonline.com/funalagabipetalimelu.pdf
    • https://cdn.sqhk.co/sawowudin/Bhijiif/get_gameboy_games_on_iphone.pdf
    • https://cdn.sqhk.co/kelanadu/gjfaSgj/meniro.pdf
    • https://cdn.sqhk.co/wepunajexiju/n1Jicig/project_plan_free_template.pdf
    • http://ligumexijigab.getenjoyment.net/sesowobuba.pdf
    • http://libutulidux.medianewsonline.com/63743679171.pdf
    • https://cdn-cms.f-static.net/uploads/4477637/normal_600ca78b0d53c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ronatiduzoxij/majosuvipigarobip.pdf
    • https://s3.amazonaws.com/batoragubukepo/violin_solo_canon_in_d_sheet_music.pdf
    • https://s3.amazonaws.com/gaxuremewuger/how_to_read_number_in_english.pdf
    • https://s3.amazonaws.com/sojuravewi/nefabumalizafedexenizeji.pdf
    • https://s3.amazonaws.com/pokixovuxik/37958402327.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed7a.bin
c3c1bd75dd9efaddff676db56fc5dfd256a3a346daf45158a3397949f6951e02
pdf-font-stream PDF embedded font (sfnt) at offset 0xED7A 5176 bytes
font_01_sfnt_off0000ff31.bin
ffe0b7729a31617c8a58d361d83d0fd429fd95f54a36685ff193fa69e1f03d10
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF31 10804 bytes