Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc46afe49dcbd39…

MALICIOUS

PDF

86.0 KB Created: 2021-04-16 11:12:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 923ad341756075784c1d0ed5da3f457c SHA-1: 60164f6e66dff4d22c6d38ee81ddb84ef7c36ed0 SHA-256: 8cc46afe49dcbd391a78673f35aefe05003d4d272b2a1e01bd7f044cf7829a04
96 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL 'https://midufefew.ru/strik?utm_term=is+c2+2%252B+paramagnetic+or+diamagnetic' is a primary indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit vulnerabilities or trick users into visiting malicious sites.

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://midufefew.ru/strik?utm_term=is+c2+2%252B+paramagnetic+or+diamagnetic
    • http://justamorem.com/geronimo_stilton_author_net_worthq4mdi.pdf
    • https://cdn.sqhk.co/nepelusir/dMihghL/hd_wallpapers_for_mobile_1920x1080_free_download_god.pdf
    • http://kodavuviguwu.mypressonline.com/bupofumimulero.pdf
    • http://stixlife.info/911244670402ckky.pdf
    • http://cpatrump.com/norarifo7u0ry.pdf
    • http://uablog.website/cosmos_neil_degrasse_tyson_streaming_vfof8q0.pdf
    • https://cdn.sqhk.co/kominepoli/cQhbGxO/wifemalisopisopap.pdf
    • http://garant-ritual.online/cisco_asdm_manualdc8la.pdf
    • http://gakukuketisalum.scienceontheweb.net/jilevotodisamadirowomi.pdf
    • http://jovepodixowofow.mygamesonline.org/zomamevorajofugogas.pdf
    • http://raxewaponoxiv.mygamesonline.org/paraiso_travel_libro_completo_gratis.pdf
    • https://cdn.sqhk.co/nogorodizet/3OhhvQz/13837394577.pdf
    • https://cdn.sqhk.co/gebitasixa/ichbicj/badopemavulipif.pdf
    • https://cdn.sqhk.co/bozomixega/7if0jiN/us_history_quizlet_chapter_4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kukupunopedon/what_to_do_if_usb_device_is_not_recognized_windows_10.pdf
    • https://uploads.strikinglycdn.com/files/8302155b-4f6d-489c-8ec5-35f80567f6d2/a_dolls_house_theme_appearance_and_reality.pdf
    • https://s3.amazonaws.com/bejikefowu/668814641.pdf
    • https://uploads.strikinglycdn.com/files/8056c07c-e150-4797-b2f0-e2fe39109be6/how_to_qualify_for_a_disability_pension.pdf
    • https://uploads.strikinglycdn.com/files/ff7a2166-5716-4e85-b0cc-9b441e03bd2b/58904764303.pdf
    • https://uploads.strikinglycdn.com/files/9f54b145-be76-4e3f-acce-f4616dc3b71a/7566072241.pdf
    • https://uploads.strikinglycdn.com/files/db63c433-b669-4b3b-bd09-9b94a4ea6966/24234287050.pdf
    • https://s3.amazonaws.com/bulalowisu/91067619849.pdf
    • https://uploads.strikinglycdn.com/files/fe446117-0933-4679-aa76-142698372c22/how_to_modify_a_logo_in_illustrator.pdf
    • https://uploads.strikinglycdn.com/files/3d0ce082-ae5f-4757-ba13-bf45fb484c53/rebid.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_off00010bd9.bin
331eed234449802e48f826d4f70460526ab26abddabf68ee562fc80e258c066b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD9 5428 bytes
font_01_sfnt_off00011e3c.bin
7648239030ba1d5ba0fb9f70d95fd9b18cd7d8557773895adf52930064884fd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E3C 13152 bytes

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