Malicious PDF — malware analysis report

Static analysis result for SHA-256 25ab1b506dc41123…

MALICIOUS

PDF

98.2 KB Created: 2021-03-30 22:28:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83180451d5e8373dbc2af1e8df935fe6 SHA-1: d3ada540848d3963352741f590ef0858e8e81921 SHA-256: 25ab1b506dc411239027f3e04f3191b6cd98829f565695d1d2364038d1cc0b39
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when accessed, leads to a malicious domain. This suggests a phishing attempt where the document is presented as a search result to trick the user into visiting a compromised site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a secondary payload or conduct further phishing activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/wix?keyword=codex+chaos+space+marines+8th+pdf
    • https://cdn.sqhk.co/ladetozuxi/ggVDjaq/beyond_the_clouds_soundtrack_free.pdf
    • http://lixebafevoku.mypressonline.com/46228760695.pdf
    • https://cdn.sqhk.co/sepexapubu/0jeVRnr/onenote_2016_meeting_agenda_template.pdf
    • https://cdn.sqhk.co/dutedape/jiTSfr3/suvekezupipo.pdf
    • https://cdn.sqhk.co/letarezetap/iihhef5/96373328558.pdf
    • http://bukipumil.mypressonline.com/nujedivizarob.pdf
    • https://cdn.sqhk.co/tefazaturar/gchccif/solitaire_freecell_solver.pdf
    • https://cdn.sqhk.co/bojidokagivi/jihb3kB/bombsquad_baseball_jacksonville.pdf
    • http://zujadise.scienceontheweb.net/20722981102.pdf
    • https://cdn.sqhk.co/dukosisevu/aSAVO6U/73969301898.pdf
    • http://larebalin.mypressonline.com/depaburapa.pdf
    • https://cdn.sqhk.co/viwiratoposu/jbeibgf/92203061023.pdf
    • https://cdn.sqhk.co/feketukadoz/jqiczgh/can_sound_escape_a_black_hole.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d4df3acb-a9e9-4ce6-9066-4d7ad3a6450e/41342911174.pdf
    • https://uploads.strikinglycdn.com/files/bab16d76-3143-4ec6-8fa5-b29c9f37eeb9/basinakutil.pdf
    • https://uploads.strikinglycdn.com/files/0a324c99-4867-4d57-a082-ed9b9f0011d5/87365246898.pdf
    • https://s3.amazonaws.com/kubafezin/how_to_play_free_willy_song_on_harmonica.pdf
    • http://vakizonozajaxe.onlinewebshop.net/tegotutofemubapilix.pdf
    • https://s3.amazonaws.com/sikuva/how_to_fix_sump_pump_float_switch.pdf
    • https://s3.amazonaws.com/lunojol/99972834001.pdf
    • https://s3.amazonaws.com/jedobufudajewu/1.garmin_nuvi_2597lmt_vehicle_gps.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_off00013c5c.bin
0f80b0a24abe0125839645ce27e8204bf55be1c04dcd4732382c91b30e0739c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x13C5C 5532 bytes
font_01_sfnt_off00014f00.bin
6817a92367adba9fb3c4e1c20a04ec8c0cf879abef0b7576449e3c1d28336e95
pdf-font-stream PDF embedded font (sfnt) at offset 0x14F00 13684 bytes