Malicious PDF — malware analysis report

Static analysis result for SHA-256 947a8d4925185793…

MALICIOUS

PDF

77.9 KB Created: 2021-03-22 06:36:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71c6944e633c55d0ca27772ee1d30cef SHA-1: 4063f032e0e03f927985ca8eb13963696f3880a3 SHA-256: 947a8d49251857935c20fa2e6c7a3334617fe3b7dc2bc52adef1f4fc91fd3fb1
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to a suspicious domain, which is also listed as an IOC. ClamAV detection and ML classification strongly indicate maliciousness. The document body, though heavily obfuscated, contains text related to 'Rockstar movie all songs free', suggesting a lure to a malicious URL for potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/123?utm_term=rockstar+movie+all+songs+free
    • https://cdn.sqhk.co/bovokolel/Xjbjajg/hair_salon_names_around_the_world.pdf
    • https://cdn.sqhk.co/pugipepa/gcDVWhb/elite_motos_2_baixar.pdf
    • http://stavki-na-sport.site/modern_family_season_7_scriptuy4rn.pdf
    • http://mamontov-net.cc/avon_catalogue_october_2020mo2hw.pdf
    • https://wedutigumufezeb.weebly.com/uploads/1/3/4/6/134659425/2021387.pdf
    • http://respect-ltd.su/google_assistant_android_play_storey5dvt.pdf
    • https://cdn.sqhk.co/bapuwanuvadi/3igidhh/megokotumuwesimobexon.pdf
    • https://lebetazukuz.weebly.com/uploads/1/3/1/6/131606644/bafosaxusobe.pdf
    • https://cdn.sqhk.co/vexagajezesa/jjuNEYi/drive_by_exploit.pdf
    • http://vigastlens.xyz/geboluditegaxobut6u8fb.pdf
    • https://wujawosekeg.weebly.com/uploads/1/3/4/7/134712458/9a4cd01bf14f11b.pdf
    • http://mobile-media.moscow/zigatimovoxag5rr.pdf
    • https://cdn.sqhk.co/lozuzupadis/iiieNHM/windrunner_movie_amanda_peterson.pdf
    • https://notaxivarem.weebly.com/uploads/1/3/4/6/134633458/a8816c1859f9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/muvarelo/earth_s_rotation_worksheet_4th_grade.pdf
    • https://uploads.strikinglycdn.com/files/c4f4d83b-6c4c-4e37-8582-2c7603eabcfa/el_amor_en_los_tiempos_del_colera_espaol_latino.pdf
    • https://s3.amazonaws.com/zarelusipofox/lukugozipizelapurog.pdf
    • https://s3.amazonaws.com/pigolo/how_do_you_fix_a_auger_that_wont_turn_on_a_pellet_stove.pdf
    • http://vimitafukufes.rf.gd/pumupovedojazepifevifo.pdf
    • https://s3.amazonaws.com/woxewiwupir/kivesolulukavefuneriz.pdf
    • http://gijifosunusu.epizy.com/74594216716.pdf
    • https://uploads.strikinglycdn.com/files/7302f9c0-160a-4ac4-8590-b38af528b369/how_much_is_the_magic_bullet_at_walmart.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_off0000f20a.bin
47a766e6a2fc8e3d7e85ffcfcbcc07b977e323c5af3ebd1b8d0abb5938a419c4
pdf-font-stream PDF embedded font (sfnt) at offset 0xF20A 5332 bytes
font_01_sfnt_off0001042c.bin
f79f96a88081dfe3877258c108f19c6fa5bf1c5a3fa11d880ed3019ed9c9d99e
pdf-font-stream PDF embedded font (sfnt) at offset 0x1042C 11312 bytes