Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b9d4c386e3274d0…

MALICIOUS

PDF

101.3 KB Created: 2021-03-18 09:04:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac0f083777a6d95c754504ad4cb73b73 SHA-1: d2f666b6a485bc5f6a8261bac14a59c746a11950 SHA-256: 8b9d4c386e3274d0da77965e565847d01707b9189a55d8c1d00b4f43a6b25e24
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URI pointing to a URL that appears to be a search result for a product manual, likely a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The presence of multiple unknown URLs suggests a campaign distributing malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://kuzutuzo.ru/strik?utm_term=sharp+xe-a102+manual+uk
    • http://mumolazesinidix.getenjoyment.net/sonujutopizixawijo.pdf
    • https://finudekenituw.weebly.com/uploads/1/3/6/0/136053274/verazixidopiram-loriva.pdf
    • https://mobirepesumab.weebly.com/uploads/1/3/4/8/134855066/kobin.pdf
    • http://1eyvgo.xyz/descargar_tu_eres_frankie_ruiz_mp3bwxh9.pdf
    • https://vemusosafuz.weebly.com/uploads/1/3/1/3/131398108/7430764.pdf
    • https://tesazosutev.weebly.com/uploads/1/3/4/7/134714215/1470201.pdf
    • http://moxolesapudeli.22web.org/scholarly_definition_of_capital_formation.pdf
    • http://avit0.pro/ulidavaru_kandante_songs_kannadar0urb.pdf
    • http://xojuxelase.medianewsonline.com/92011126415.pdf
    • http://spindlndou.space/university_of_miami_email_for_lifexspz2.pdf
    • http://lazujifoxupa.getenjoyment.net/dukugubabodona.pdf
    • http://navaram.online/how_to_train_your_dragon_2_rotten_tomatoesaztkr.pdf
    • https://lasuzolus.weebly.com/uploads/1/3/5/3/135315371/cfb6290.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/f8f3663f-2f55-4498-9f00-4286580523d6/3_parts_of_a_halligan_tool.pdf
    • http://gutefidinasat.rf.gd/organizational_culture_and_leadership_4th_edition_free.pdf
    • https://uploads.strikinglycdn.com/files/d510c992-e187-4f72-9793-4d0ea28ce814/nidopumanakajerapojok.pdf
    • http://nabajorugum.rf.gd/woxejijonugoripaz.pdf
    • https://uploads.strikinglycdn.com/files/83752d49-0314-452a-8c02-2b6ef63a4fe1/jozavusesawegetemipilot.pdf
    • http://bugenerefajujus.atwebpages.com/rizijidepilokezigimeb.pdf
    • https://s3.amazonaws.com/zumezeviwakiz/40108164229.pdf
    • https://s3.amazonaws.com/nitajosasa/contra-_histria_do_liberalismo.pdf
    • http://kosezofejesuxef.atwebpages.com/menoji.pdf
    • https://uploads.strikinglycdn.com/files/ea42cfa4-e812-4e3f-b339-3023e630368f/covid_health_policy_uk.pdf
    • https://uploads.strikinglycdn.com/files/033a937d-3c0b-42fa-b301-de391e7830d6/is_relational_dialectics_theory_objective_or_interpretive.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001253d.bin
5278ac349d19eb13341afc562f4add1129c2e8a51ec9ff74aa6cffdcfacf169d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1253D 5120 bytes
font_01_sfnt_off0001367d.bin
02fd59edfa493e99436e827452ca258a38a0c42c35eab611194c3b378dd82f26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1367D 13648 bytes
font_02_sfnt_off00016146.bin
81480a87bb2947186a6b8bed6b84498f514e8db9a935dd3572682baeb2252ec4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16146 16476 bytes
font_03_sfnt_off00017769.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17769 4324 bytes

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