Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f9194faa1f6878…

MALICIOUS

PDF

113.6 KB Created: 2021-03-14 12:21:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8862a7846ff0c0d5380ac32bb6d498dc SHA-1: 5f6a905b25f10a96b915d933b77648ef4e2fbc7b SHA-256: c6f9194faa1f6878f6b828643a91c37153455e6f6210c21f7b3ee59baf88ad99
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. The document body, though heavily obfuscated, appears to be a lure related to financial topics, likely intended to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://pelibifir.ru/award?keyword=islamic+banking+system+in+pakistan+pdf
    • https://cdn.sqhk.co/tajudozizif/jikwhbr/playstation_5_pulse_3d_wireless_headset_price.pdf
    • http://byseles.xyz/is_5x5_the_best_workout1ld2x.pdf
    • http://pokupka.space/dafotr1t1h.pdf
    • http://kadanijojabuf.mywebcommunity.org/baptism_of_fire_guide_kingdom_come.pdf
    • http://instofficial.online/97134152807ouvd7.pdf
    • http://wimuzawoxi.getenjoyment.net/6476064305.pdf
    • https://cdn.sqhk.co/sefedetorup/hihdjjg/24680575346.pdf
    • http://romeital.space/game_battle_cats_mod_apk51gjb.pdf
    • http://sifimomikev.sportsontheweb.net/nixasogixunusako.pdf
    • https://cdn.sqhk.co/wuvotalek/VCtDY4V/funny_snapchat_voice_changer_videos.pdf
    • http://spiritstudio.ru/my_asko_washing_machine_door_wont_openwtfdc.pdf
    • https://cdn.sqhk.co/novujarogoga/hbgejbz/ice_cream_shops_near_me_open_late.pdf
    • http://50off.pro/application_architecture_guide45dkt.pdf
    • http://kupivse.xyz/weather_report_for_camlachie_ontariobkhp2.pdf
    • http://ig-copyrightnoticehelp.com/fuxebajojivekixamebofemoferlr.pdf
    • http://kajejib.medianewsonline.com/degimetaxowifamag.pdf
    • http://idealslim-ordina.site/hamilton_beach_bread_maker_error_codesqq3xb.pdf
    • http://kogutojoveso.mywebcommunity.org/zopiv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/rutufokedizon/94174919350.pdf
    • https://s3.amazonaws.com/rujabepifar/52952617531.pdf
    • https://s3.amazonaws.com/xupimaral/chapter_18_biology_class_11_ncert.pdf
    • https://s3.amazonaws.com/gedimuta/88418504695.pdf
    • https://s3.amazonaws.com/xufoxorog/329235119.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000170b6.bin
7041bb7e3d1ececb0d54d363d347bc3d7e9bed806572e5e4226f1820a5e6702d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x170B6 5300 bytes
font_01_sfnt_off000182a7.bin
74e0f29c72bada03a5e44e5f5b5cbc2988fcb871d74f91bb534a0f8c5c253515		 pdf-font-stream PDF embedded font (sfnt) at offset 0x182A7 11908 bytes
font_02_sfnt_off0001aa6d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA6D 4324 bytes

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