Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbf741e891e821af…

MALICIOUS

PDF

106.0 KB Created: 2021-06-01 13:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00121bdeefc9639c417e114572639933 SHA-1: 3f8d0f7f69cfe47d289d57dd95895bd1ec812692 SHA-256: fbf741e891e821af6dbd77650cc120fe11bd08e58e26fd6e0745675533300db5
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though heavily obfuscated, appears to reference tax rules, suggesting a phishing or social engineering lure. The presence of an external URI indicates an attempt to redirect the user to a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seumenha.ru/wb?keyword=new%20tax%20rules%20for%20landlords%202020
    • https://static.s123-cdn-static.com/uploads/4456984/normal_5ff45f4b8b5ed.pdf
    • https://static.s123-cdn-static.com/uploads/4373527/normal_5fef04b1d2192.pdf
    • https://cdn-cms.f-static.net/uploads/4393356/normal_6057f411015e0.pdf
    • https://cdn-cms.f-static.net/uploads/4469847/normal_5fd10cb290edb.pdf
    • https://cdn-cms.f-static.net/uploads/4365649/normal_6029dc6ccd30f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0a8047c2-e06c-4d97-b758-a9d4a1976396/hello_neighbor_2_alpha_1_download_tinybuild.pdf
    • http://mefijunov.pbworks.com/w/file/fetch/144420576/toddler_cape_coat_pattern.pdf
    • http://zelovoguvunu.pbworks.com/w/file/fetch/144427086/conversione_file_in_word_online_gratis.pdf
    • http://liguduper.pbworks.com/w/file/fetch/144452562/licencias_para_eset_nod32_antivirus_2021_marzo.pdf
    • http://sajateves.pbworks.com/w/file/fetch/144442860/how_to_play_hide_and_seek_by_yourself.pdf
    • https://uploads.strikinglycdn.com/files/92697a14-7dbd-45ae-aa09-f6cebc2f7231/68487325810.pdf
    • http://kedetuwi.pbworks.com/w/file/fetch/144429063/54624077267.pdf
    • http://lekuzax.pbworks.com/f/shaun_king_net_worth_nfl.pdf
    • http://mikabipi.pbworks.com/f/f1_manager_tips_for_qualifying.pdf
    • http://mifimoruzuwo.pbworks.com/w/file/fetch/144431238/pulp_fiction_full_movie_google_docs.pdf
    • https://uploads.strikinglycdn.com/files/57ca89ce-60cc-4f73-8d53-9653ff918d0e/81017324469.pdf
    • http://vowujepojez.pbworks.com/w/file/fetch/144428172/2003_jeep_liberty_sport_fuse_box_layout.pdf
    • http://pokuwatosat.pbworks.com/f/42944238781.pdf
    • http://negovijalulu.pbworks.com/f/kudi_mainu_kehndi_video_song_download_bestwap.pdf
    • http://tukufidanega.pbworks.com/f/4547778416.pdf
    • http://tagexoba.pbworks.com/w/file/fetch/144423237/r_programming_for_data_science_by_roger_peng.pdf
    • http://zexowisam.pbworks.com/f/netflix_para_android_7.1.2_tv_box_apk.pdf
    • http://gitefov.pbworks.com/w/file/fetch/144458442/neighbors_2_sorority_rising_full_movie.pdf
    • https://uploads.strikinglycdn.com/files/23097527-2d9a-489a-bd17-bae97a8250de/silence_of_the_lambs_actor_buffalo_bill.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014d2b.bin
99cc6abf2e0b22805d2ae8a6826cfe21ddfd56020c6aa534ee17960f456e9c79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14D2B 5304 bytes
font_01_sfnt_off00015f5f.bin
ed66c57154b30b84f4a4a9f8eb4ce958f834145006c99c975e5e2091a239cd4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15F5F 11196 bytes
font_02_sfnt_off000185b2.bin
a428e84a47d03438fd5ed8c13af51c073340c28df02463183879d2df9ebd4b49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x185B2 16060 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.