Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9750bd31e9f8c41…

MALICIOUS

PDF

78.0 KB Created: 2021-04-08 04:55:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8198692896efa65f9b8579a1dab3776 SHA-1: 7f807246ab17cb4dee055a847a3b029772363e4f SHA-256: c9750bd31e9f8c41b31e747246115473cad8f5586ed4e5dfcaa123c2a4989aab
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing trojan by ClamAV. It contains numerous embedded URLs, with one prominent URL being https://nipisod.ru/123?utm_term=bhakti+video+song+bhojpuri+free, suggesting a phishing or malware distribution attempt. The document body contains garbled text and metadata, indicating it is not intended for legitimate user consumption.

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://nipisod.ru/123?utm_term=bhakti+video+song+bhojpuri+free
    • http://canlisohbetim.net/the_secret_river_andrew_bovell_quotes2our5.pdf
    • https://cdn.sqhk.co/guzoladip/gLJgeOK/12724938709.pdf
    • http://milansit.space/1804460586010zch.pdf
    • http://sanatoriy-izumrudny.ru/27359154095m56zp.pdf
    • https://cdn.sqhk.co/norumuwapa/idKhjjc/terugelujogajazuv.pdf
    • http://vuzetasavuxoso.mygamesonline.org/4189398954.pdf
    • https://cdn.sqhk.co/vivepovugeli/gmmYFif/swamp_people_cast.pdf
    • http://cherrypimp.online/tipos_de_fichas_tcnicas_de_modac735a.pdf
    • http://clubstore.info/louise_hays_parka6xg2.pdf
    • http://umdtheatre.ru/why_is_my_standby_light_flashingjx1cp.pdf
    • http://lestyprin.online/iucn_red_list_guidelines0qkid.pdf
    • http://hookup157.online/mutetavaneridonarozu5k2su.pdf
    • http://anbieterbewertung-autoscoutch.com/47917736853g7m3m.pdf
    • http://distornyup.site/hard_maze_games_printablezverd.pdf
    • http://criticcxck.space/present_simple_exercises_for_beginnerse6iww.pdf
    • http://lifeeuro.info/paid_time_off_after_terminationi7mgb.pdf
    • https://cdn.sqhk.co/xinovupu/ghaccFn/netbackup_deduplication_guide_8._1.pdf
    • https://cdn.sqhk.co/baxafapunubi/L5ghggc/90s_popular_music_videos.pdf
    • https://cdn.sqhk.co/vekudaselux/gdZIzbh/pidigen.pdf
    • http://lorewipa.scienceontheweb.net/donumurujisesazo.pdf
    • http://mkuu.club/how_to_get_a_drivers_license_in_man23yn.pdf
    • https://cdn.sqhk.co/kevamubeminu/dDg7T1M/ultimate_ninja_blazing_apkdlmod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000f007.bin
12f2b822e8faa93fa54ce104b59c890ec92e60b1771bc06c3791d6686c757869
pdf-font-stream PDF embedded font (sfnt) at offset 0xF007 5660 bytes
font_01_sfnt_off0001034c.bin
27c4891621cb56bbb8cd9d8cbec0046100968bbe071902b08b8301ef25643304
pdf-font-stream PDF embedded font (sfnt) at offset 0x1034C 11716 bytes