Malicious PDF — malware analysis report

Static analysis result for SHA-256 adb98794a6712f74…

MALICIOUS

PDF

77.5 KB Created: 2021-04-21 02:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 81fb6ad4b5fa31c74792113036d21aa1 SHA-1: 0813535ea2040178ac5c173cbc376bf623efa492 SHA-256: adb98794a6712f74d5574d55081e2ab359978a2015851d9dd70aac61e9461347
96 Risk Score

Malware Insights

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

The PDF document contains embedded URLs that lead to suspicious domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the presence of external URIs and the document's deceptive content point towards an attack pattern designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/strik?utm_term=how+to+tell+if+your+record+player+needle+is+broken PDF link annotation
    • http://circleshtang.xyz/96816241127z7vhm.pdfIn PDF document text
    • https://cdn.sqhk.co/wajewukudino/Ktdhc94/21127326237.pdfIn PDF document text
    • https://cdn.sqhk.co/wejafivelij/fB37Y1s/nosafutonoluloxowesix.pdfIn PDF document text
    • http://acupofjacob.com/78227674545e9cya.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/hehbbrr/69139268581.pdfIn PDF document text
    • http://timurberg.ru/bugaboo_frog_baby_stroller_cost8q9nf.pdfIn PDF document text
    • http://eslife.pro/perc_h700_firmware_updatehjonn.pdfIn PDF document text
    • http://sq11mini.com/best_dirt_bike_tracks_near_me6chyv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/11f92c1d-6103-430d-90a9-e154337f1d28/nanotizusewejud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2281c05a-8fd1-43af-a88e-0fc2e3fe6bac/39204669560.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42775718-d58e-4ced-a255-b8d7a3c57031/jokotikixufokuwimixupit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/866ef4a2-1691-443a-93ed-1b014f1e5b36/big_e_wood_pellet_stove_breckwell_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5efaf282-1f81-440e-98be-746417b6ae3f/82511007202.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90f5b1cb-a1f0-4686-bda6-63b05164d8ab/59954903982.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/933cc2fc-4143-4bb7-bbd0-efd36dd0c949/what_is_the_significance_of_ethical_issues_in_nursing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d729db7a-01d7-4dee-8366-60dfeb5af49a/ranger_boats_pro_staff_2021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2beed98f-9bac-46db-8e9a-de8c0aeb7b6e/dapafipevuril.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ba3d2a1-5e09-45ed-90a6-99908e95b7dc/does_cigna_cover_spectra_s1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94a558d9-eb85-4b1a-809a-4299f823891c/how_to_use_google_effectively.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/554c3d33-7cc6-411f-b9c4-60019503030a/the_alabaster_girl_epub_download.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_off0000f01e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01E 5508 bytes
SHA-256: f85e4c6070e247c2cd75d447c7a7a34239ac3f00f4e74de4001386a3100717ec
font_01_sfnt_off000102fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102FC 10360 bytes
SHA-256: e09a3802019826205a58f1f69409457ced8586cc5f0276ddfaff9dbc651384fc

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