Malicious PDF — malware analysis report

Static analysis result for SHA-256 14c8b07874331b3f…

MALICIOUS

PDF

82.8 KB Created: 2021-03-09 11:17:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a142341e68057c4515f915702ea914ca SHA-1: 505119fe2e480c1302f1d4f41643274156f2c1c4 SHA-256: 14c8b07874331b3f18fa5ab10fc2b954875eaa815b0b97ec766eb47cebfd13f1
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, such as 'https://nipisod.ru/123?utm_term=anatomia+cz%25C5%2582owieka+adam+bochenek+pdf', suggests the document is designed to redirect users to external resources, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malicious content delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://nipisod.ru/123?utm_term=anatomia+cz%25C5%2582owieka+adam+bochenek+pdf
    • http://vitikamun.22web.org/53291581425.pdf
    • https://cdn.sqhk.co/jigugabopu/2jjvwhj/fulinokonu.pdf
    • https://cdn.sqhk.co/vekokoze/Ijfigii/rerexowabivokugoxoxiwuwo.pdf
    • http://sidufapas.mywebcommunity.org/48194136049.pdf
    • https://cdn.sqhk.co/pozazoji/hhLfJT4/tiles_design_pictures_hall.pdf
    • https://cdn.sqhk.co/togokitaz/bCjcdic/color_legend_in_tableau_dashboard.pdf
    • http://rejemezurufoveg.mywebcommunity.org/how_to_start_your_own_cyber_security_company.pdf
    • http://zatorigixoluji.iblogger.org/minecraft_pe_free_chromebook.pdf
    • http://jotitojimo.mygamesonline.org/bills_of_exchange_act_1882_summary.pdf
    • http://gudelew.mywebcommunity.org/71574198843.pdf
    • http://warixedivukinat.mygamesonline.org/can_you_have_2_modems_with_spectrum.pdf
    • https://cdn.sqhk.co/sobupepokor/fhhphaY/storybeat_apk_ios.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e059cf2e-887f-47dc-9692-98cbdd8df920/life_span_human_development_8th_edition_test_bank_free.pdf
    • http://pedirite.onlinewebshop.net/digemadij.pdf
    • http://tobavukopipe.epizy.com/simalofagemadasudebanege.pdf
    • https://uploads.strikinglycdn.com/files/084e8668-e708-4728-a842-8b380d53a63d/59117559497.pdf
    • https://uploads.strikinglycdn.com/files/9466592e-bf6e-444b-bfb4-4da6aa9731ff/eventide_timefactor_looper_midi_sync.pdf
    • https://uploads.strikinglycdn.com/files/31c91595-3710-4046-9d18-20333e9be1a7/parew.pdf
    • https://uploads.strikinglycdn.com/files/3ef902c7-9be5-4b39-bd34-52918fde9d4d/59513293095.pdf
    • https://uploads.strikinglycdn.com/files/040f85aa-db05-4d4e-a70f-3a2c656c1cc6/how_to_tell_if_furnace_filter_is_dirty.pdf
    • https://uploads.strikinglycdn.com/files/c3dc92c7-5493-4122-a37c-177ad47e5746/3299636274.pdf
    • http://jadigilotuziwir.rf.gd/nurimejemefoxo.pdf
    • https://uploads.strikinglycdn.com/files/2eb2a009-6bbd-448e-97b6-06c9f18ce0e1/paladin_5e_oaths_tasha.pdf
    • http://lexamokoxerum.atwebpages.com/petzold_minuet_in_g_minor_sheet_music.pdf
    • http://dowuvoduwitovos.atwebpages.com/kahr_cw9_vs_cm9.pdf
    • http://ladurabazidema.onlinewebshop.net/cd4081bcn_datasheet.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_off0000ffe3.bin
e848209a1e549efa0431395715e038aebc707d67a5342c76fdd1347f77746091		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE3 5480 bytes
font_01_sfnt_off0001128a.bin
8986204550f3e3bc20795887e56c26e833a27da578f25a416a9c2804bc9d746d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1128A 13400 bytes

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