Malicious PDF — malware analysis report

Static analysis result for SHA-256 94f66e4e81b21556…

MALICIOUS

PDF

88.3 KB Created: 2021-03-24 10:25:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 968477f0febff7f9209c4ae12632e594 SHA-1: d6b5537e511b43684389523d80a4f2fe64d99fe4 SHA-256: 94f66e4e81b215568fea0a7d8b277506faa70bce9309f036d1d222b13f75093c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search engine result, likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. No scripts were extracted, but the presence of an external URI points to a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/strik?utm_term=why+did+absolutism+begin+in+europe
    • https://kowasazupajobex.weebly.com/uploads/1/3/1/3/131383373/2c11d030456264c.pdf
    • https://sivevaredewiw.weebly.com/uploads/1/3/4/4/134464028/betimepi_kokifav_rudizose_gugiserul.pdf
    • http://kaxavetaxudu.mywebcommunity.org/ca_paid_leave_of_absence.pdf
    • https://fazotevepokok.weebly.com/uploads/1/3/4/8/134865813/4601139.pdf
    • http://umdtheatre.ru/meanwhile_elsewhere_russian_revolution_answersktftb.pdf
    • http://pollsexpert.com/camara_panasonic_lumix_dmc-zs252vvrq.pdf
    • http://ketosimple.online/witcher_3_path_of_warriors_cave_entranceoqmb6.pdf
    • http://jobware.pro/117849384328atar.pdf
    • http://namelesssouth.xyz/nazaxefivojtuq0t.pdf
    • http://insurancecarusa.com/wrt160n_default_user_and_password5y076.pdf
    • https://zoletewiv.weebly.com/uploads/1/3/2/6/132695336/tatipomonibopimubofu.pdf
    • http://4gusevshop.space/blank_7_continents_worksheet3m4ec.pdf
    • http://lnstagram-helping.live/intro_a_2008_dressage_test_free_downloadavezb.pdf
    • http://kovatafob.mypressonline.com/garmin_nuvi_2639lmt.pdf
    • http://love-cosmetics.shop/risk_burndown_chart_excel_templatefygrw.pdf
    • http://rkconstructionsucks.com/karewokinmpwnh.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/edb0612c-6b2a-4502-8dc7-3638855721ab/nys_dmv_cdl_b_practice_test.pdf
    • http://gajutar.onlinewebshop.net/rumafagiwigemalerasage.pdf
    • https://uploads.strikinglycdn.com/files/a37f513a-e4e6-4854-9439-3dbc4b266969/the_devops_handbook.pdf
    • https://s3.amazonaws.com/wolina/how_to_do_multiple_selection_in_excel_drop-down_list.pdf
    • https://uploads.strikinglycdn.com/files/2c05dd1d-8b0b-43c8-89e3-47ebf8f61155/kexeposudanarogaxejowudon.pdf
    • https://s3.amazonaws.com/pugomonapoxuxe/home_expense_budget_excel_template.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_off00011cd5.bin
57d62531b5d30168f075ee4cb1b654c57739c7e29e480d06c6d9caee4a754acd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD5 5628 bytes
font_01_sfnt_off00012fd9.bin
3a91d5698922e0652d3921278df5830463a28772bd1da136f53455b3d0aa137e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FD9 10888 bytes

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