Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cf26b9530d296b6…

MALICIOUS

PDF

78.2 KB Created: 2021-04-01 04:18:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 1e23f81b683b9e89e392f1dbe0e1f141 SHA-1: 4bd4b4580a8e35fe6b6c3d36a9a4df6f188e1323 SHA-256: 7cf26b9530d296b60e1f92d8cdcdda376a5e3bdf0fd6e12712873ab44e09deae
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a PDF phishing trojan. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic indicate an attempt to redirect the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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/award?keyword=o+level+economics+topical+past+papers+pdf PDF link annotation
    • https://cdn.sqhk.co/bemovunilupo/iiihggT/ebay_thrift_mine.pdfIn PDF document text
    • https://cdn.sqhk.co/mevazasid/afmjq1J/buzzer_app_for_classroom_games.pdfIn PDF document text
    • http://sberbank.services/wagitabuvigiwesawovexonawgfs.pdfIn PDF document text
    • http://mp4.design/para_que_sirve_el_jengibre_en_te_con_canelabpqrw.pdfIn PDF document text
    • http://rodufedizukol.22web.org/athlean_x_xero_program.pdfIn PDF document text
    • http://robertferrell.net/banotefafizzdiyw.pdfIn PDF document text
    • https://cdn.sqhk.co/rizitewav/ehdjdeb/95797848488.pdfIn PDF document text
    • http://purpless.vip/fosanisoigq5.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxujagemo/esIjcQq/53528989271.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/73228361822.pdfIn PDF document text
    • http://tolimimagag.epizy.com/management_accounts_balance_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/how_to_reset_ricoh_toner_chip.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/tirigexeluxasom.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/berlitz_spanish_book.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/zozakefokotozesozedita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fff507b1-32c9-4eda-b287-92d2ae4e9a78/how_much_does_it_cost_to_get_a_dachshund_neutered.pdfIn PDF document text
    • http://xebizeluzifavi.rf.gd/charles_crook_ordenadores_y_aprendizaje_colaborativo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e151b36-dcfd-4e1d-82b7-4378019cc185/kurt_vonnegut_harrison_bergeron.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/satipekaminusud.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/bolton_valley_backcountry_guides.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac6186bc-2404-440c-8f0a-a1679cfcd55a/how_to_repair_apc_ups.pdfIn PDF document text
    • http://vezifalame.epizy.com/nagosipamozukabesivifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/433a7c4c-6b07-427d-8289-6f2844f123f3/how_to_change_preview_handler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8f6f9ea-643c-400b-8926-f6b44a6ba6b3/82672326717.pdfIn PDF document text
    • http://komeraja.epizy.com/vawopufiwododo.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/horatio_gates_reading_answer_key.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_off0000f11b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11B 5388 bytes
SHA-256: 385c8692300165fca3d4b1f1c177e588035661d92f6e1b379a5896c23e6c0b46
font_01_sfnt_off0001035d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1035D 11564 bytes
SHA-256: acb3d17b30965e5bb3a25ab8d6551c778b720e34357ba408b08ed92f3df69c67

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