Malicious PDF — malware analysis report

Static analysis result for SHA-256 8711e2f0c4276de7…

MALICIOUS

PDF

102.4 KB Created: 2021-02-25 10:22:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: fce2e703a8f8463f28a2e8e7bfc625d6 SHA-1: dbe0abe88b16d7ef7da10e19130b710654730059 SHA-256: 8711e2f0c4276de79ec31013c06e619f1383aecc3018a96632baa9d28fe8f7d1
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with one prominent URL pointing to 'bologen.ru', suggesting a phishing or malware distribution attempt. The PDF structure and embedded content, though heavily obfuscated, are consistent with documents used to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/strik?utm_term=as+bill+sees+it+page+133 PDF link annotation
    • http://socialwave.me/zejurusezavamijetufuv5klqo.pdfIn PDF document text
    • https://cdn.sqhk.co/devurekon/9tp1haq/40462501638.pdfIn PDF document text
    • http://trokot-online.xyz/adnan_sami_sun_zara_song_free92jz2.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/31553488872.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/NIOxhgd/39476644228.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/sMavidX/eternity_legends_dynasty_warriors_3d_strategy.pdfIn PDF document text
    • http://itanah.space/90747844145q4smq.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/zjgjb2T/hidden_hearing_ballsbridge_dublin_4.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/canon_mg3520_printer_cl_light.pdfIn PDF document text
    • http://lenuvivureropi.scienceontheweb.net/par_quoi_peut_on_remplacer_la_feve_tonka.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/0Mhdjg3/heron_island_wind_direction.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kasisexa.rf.gd/favowosiwi.pdfIn PDF document text
    • http://fiduritunibo.epizy.com/bluetooth_headset_battery_level_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/60308357352.pdfIn PDF document text
    • http://woxenebifa.rf.gd/35773776134.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/sotimo.pdfIn PDF document text
    • http://piwakitidi.onlinewebshop.net/virusowogojuzulejo.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/fundamentals_of_chess.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/13869042193.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/fafutogupedamimofit.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/free_lagu_back_in_black_ac_dc.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/blessing_of_baapu_video_song_free.pdfIn PDF document text
    • http://vugapadilubokis.epizy.com/world_map_black_and_white_outline.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000154b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154B1 5236 bytes
SHA-256: d769dd90401bff111eefbd7f1bbc5c071c71fde2d9681e9ad2ae086aa7150b46
font_01_sfnt_off000166a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166A4 10972 bytes
SHA-256: 167365bdf41e873cdde9cf1593ad140c63a699dc496fd6f93133ab17db0c610e

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