Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c6ae9ec856d0f63…

MALICIOUS

PDF

81.0 KB Created: 2021-02-03 09:50:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 38462c75e09ad6ae9abd96cbdf8832f7 SHA-1: 91e57307c2230d62f52ade5e9995c86a8b3eed42 SHA-256: 5c6ae9ec856d0f6316250c1660108c5f1bd7f1a844f1940e34de0898642f085a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that leads to a site offering a Minecraft crack, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. The document body, though heavily obfuscated, contains references to 'Minecraft crack apk' and the authoring application 'wkhtmltopdf', further suggesting a lure for potentially unwanted software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/123?utm_term=minecraft+crack+apk PDF link annotation
    • https://cdn.sqhk.co/zubavagi/Uvjbj9m/activ_racer_application.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/gyegehi/lokevunolatadobip.pdfIn PDF document text
    • https://cdn.sqhk.co/zupitefa/UHib1D6/760488031.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/vobuturinivi/star_wars_armada_cards.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/afcat_2019_official_notification.pdfIn PDF document text
    • http://nupopejif.epizy.com/set_background_android_transparent.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/fefepigogo.pdfIn PDF document text
    • http://pobipegosaba.epizy.com/xebesezekokusuvoduvirebi.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/game_bn_sng_sinh_tn_android.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/nakop.pdfIn PDF document text
    • http://xuwedumod.epizy.com/834876633.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/kupasiviwurix.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/19843783606.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/instagram_photos_app_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/pride_victory_10_scooter_manual.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE152 4868 bytes
SHA-256: ccd37a1facdbcb8d4556215e0fd44e22106eef42bce6c25b705d78842906d355
font_01_sfnt_off0000f200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF200 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000fa8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8D 11340 bytes
SHA-256: b817370baa87208d6b8a1541e7b3898c9af9cebbb6afd90b1aa099ef69033f08
font_03_sfnt_off00012091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12091 16660 bytes
SHA-256: 0b4f9904cc63eeb245c31300081beae5dd130040598f84ad13cd294c90142161

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