Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eacbbf6f16eec8a…

MALICIOUS

PDF

75.2 KB Created: 2021-03-17 19:57:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f94a467d1c79d364eaae26c0ddc3c36 SHA-1: 721d2a024a6815cd6073fd12977f4e16fd47e675 SHA-256: 8eacbbf6f16eec8aa8ec32382218c304ad6bc6e92dd44d04c128a44760b678c1
104 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of an external URI and a visual download button. The embedded URL, https://botokaw.ru/award?keyword=baixar+advanced+scan+to+pdf+free, likely serves as a lure for phishing or malware distribution. The document's structure and the presence of these indicators suggest an attempt to trick the user into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=baixar+advanced+scan+to+pdf+free
    • https://cdn.sqhk.co/zidenesek/6Mja2ij/jimadazowojibu.pdf
    • https://static.s123-cdn-static.com/uploads/4410962/normal_5ffb947ca46a1.pdf
    • http://fikakutipid.mygamesonline.org/bruchrechnen_aufgaben_mit_lsungen_klasse_7.pdf
    • https://cdn.sqhk.co/gejupajo/ifhjhjd/photo_collage_software_mac_free.pdf
    • http://kojazunupetip.mygamesonline.org/lozetunajolotatajulibi.pdf
    • https://cdn-cms.f-static.net/uploads/4374956/normal_602946863f716.pdf
    • https://cdn.sqhk.co/wanolugago/el4ic5r/pexexadevogu.pdf
    • http://dogalijun.scienceontheweb.net/42787962558.pdf
    • http://balegetiwep.mywebcommunity.org/37594604221.pdf
    • https://static.s123-cdn-static.com/uploads/4451551/normal_5ff6a6281d690.pdf
    • http://zoluwofemofuper.sportsontheweb.net/nuwobofipisefujomexo.pdf
    • https://cdn-cms.f-static.net/uploads/4446942/normal_600e6d6562a72.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8afe0708-cf39-4ce0-9b31-5e46a6464a72/nozisovazexolamimiwik.pdf
    • https://uploads.strikinglycdn.com/files/bc7f3931-51d9-4506-9eff-807c38d12f94/what_is_arris_username_and_password.pdf
    • https://uploads.strikinglycdn.com/files/e6e4c442-6944-459d-88e0-66a5027488e5/300312870.pdf
    • http://gakamaxoluzes.atwebpages.com/excellence_playa_mujeres_travel_agent.pdf
    • https://2ce49c0c-752a-49d0-a831-a69229ee2afe.filesusr.com/ugd/6e9521_ee400823046745009c70b739f15ebb3f.pdf?index=true
    • https://37bcb4aa-7747-4ff6-a352-0e22bf983c21.filesusr.com/ugd/4393d3_d532f3c0bffa4541a15783243c5a64dc.pdf?index=true
    • https://e301b21f-f707-426c-a094-6199d4b1a2d6.filesusr.com/ugd/f65518_d512b4dcd57240a0b297c238ff8b9c95.pdf?index=true
    • http://sakogabutal.onlinewebshop.net/duwafe.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_off0000e7f3.bin
ed0878d766abdada6d84b4769412e3a0332a0a94f1ac871772dd5a28dd77e918		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F3 5292 bytes
font_01_sfnt_off0000fa13.bin
c2a8499e52f839af90980df52179a428a788c6996a6a66034a4070e886735322		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA13 10972 bytes

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