Malicious PDF — malware analysis report

Static analysis result for SHA-256 42fc491f16ba10a8…

MALICIOUS

PDF

74.3 KB Created: 2021-03-17 06:50:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: b7b933467888ba745003362d582048d7 SHA-1: cbceca5b544f8eb822c708401ec792a0fbb12d8b SHA-256: 42fc491f16ba10a820c88bf814fceea7fbf1fd88a436bb2e6d2116bc51e1fe48
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely intended to deliver a secondary payload or phish for credentials. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to Italian cadastral codes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/award?keyword=codici+catastali+comuni+italiani+pdf PDF link annotation
    • https://marezupudi.weebly.com/uploads/1/3/0/8/130874377/9046198.pdfIn PDF document text
    • http://profaudit32.ru/36188366198y1h7q.pdfIn PDF document text
    • https://bafikesixetiv.weebly.com/uploads/1/3/4/5/134506736/2361666.pdfIn PDF document text
    • https://cdn.sqhk.co/xufuwejaxe/bYmCifO/subozamaxuzomevoge.pdfIn PDF document text
    • http://lenudes.com/elgato_game_capture_card_softwareh13od.pdfIn PDF document text
    • http://latuha.com/465177791380l8b8.pdfIn PDF document text
    • https://cdn.sqhk.co/lipetebo/RXOAhdg/dark_hero_astral_chain.pdfIn PDF document text
    • https://falojaba.weebly.com/uploads/1/3/0/7/130776150/7124885.pdfIn PDF document text
    • http://romeoplanet.club/vawunivphay.pdfIn PDF document text
    • http://keepsufi.space/sugunoroxolozilamoe805x.pdfIn PDF document text
    • http://lishop.site/habanera_cello_sheet_music7dx3z.pdfIn PDF document text
    • https://cdn.sqhk.co/zegareguw/ehaqggX/violin_music_collection_1000_years.pdfIn PDF document text
    • https://jofudetazowus.weebly.com/uploads/1/3/1/6/131606688/fepukegan.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/jevopemosod/borajibusaledavad.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/knex_instructions_13419.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/winning_chess_tactics_for_juniors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/026442c7-47dc-4279-8246-7d9c90e40333/vikozetuzubof.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/beachcomber_hot_tubs_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4312a52b-b594-43c4-9811-c783b090c1fe/92818663875.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f59c1a2-0a84-49b4-a408-9a828b5e2260/48991855451.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_off0000e64f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64F 5108 bytes
SHA-256: d3f45b07154070ceccf7f06d2ad7f984376f49c607ec21160844ad4b7ca3e3c8
font_01_sfnt_off0000f79f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79F 11272 bytes
SHA-256: df33488a5db129d7bb8eee1f94661f6bbc3f7323bde91f56af8ccee62ab1bca9

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