Malicious PDF — malware analysis report

Static analysis result for SHA-256 9de3a4a1ecd75e1f…

MALICIOUS

PDF

72.0 KB Created: 2021-03-14 12:22:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 2ad13efaa9d3c38d90ac32c399855b7f SHA-1: 0f9d680a128fcd4d4c30910b2e9133a200d23690 SHA-256: 9de3a4a1ecd75e1f14de4cfbdd041fce4c6f6a76637377bbdf46215b6cbfa9ba
124 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or malware delivery attempt. The document body, though heavily obfuscated, suggests a lure related to 'Bokashi composting pdf'. The presence of numerous external URIs, including one pointing to 'kuzutuzo.ru', strongly suggests the document is designed to redirect users to malicious websites. No scripts were extracted, but the PDF structure and URI findings are sufficient to infer a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6716

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://kuzutuzo.ru/award?keyword=bokashi+composting+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369656/normal_601b2e8a38710.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444657/normal_604d2bdcbb3fb.pdfIn PDF document text
    • http://pomirkapa.site/brideshead_revisited_sebastian_sheet_musicobeko.pdfIn PDF document text
    • http://cmbespaceclient.xyz/everyday_use_alice_walker_questions4tbr4.pdfIn PDF document text
    • http://saudiautoinsurance.com/a1_tamil_movie_free_tamilrockers_2019hqj00.pdfIn PDF document text
    • https://cdn.sqhk.co/tokofape/jcaDijn/22467070419.pdfIn PDF document text
    • http://checkmycredit.info/stanley_15_amp_battery_charger_bc15bs_manualc15f4.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/iglhjhc/48881893258.pdfIn PDF document text
    • http://insta-sale.site/kuduxabazufamamuvpk9.pdfIn PDF document text
    • http://vzruvayarttraff.xyz/fimanuxekumizopedivutif5lj5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415334/normal_603a970623036.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/13gjiid/jio_recharge_app_login.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/cwiaiiy/pipojijegezoz.pdfIn PDF document text
    • http://skidki-day.store/dalesobasogoboxoeiyie.pdfIn PDF document text
    • http://uspehdnyaaxyz.xyz/de_que_trata_la_novela_la_ciudad_y_los_perros1wpcu.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarasam/nuiiygc/jefaze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://61090d85-22e6-4724-b969-52a17785150c.filesusr.com/ugd/952c2e_b736a307b0014944a66a1c56309fb83d.pdf?index=trueIn PDF document text
    • https://9526c93a-d340-4dca-b5fd-2864ff0888c4.filesusr.com/ugd/4c3d6a_d8c21316d9d042fb8763b1f80a04807b.pdf?index=trueIn PDF document text
    • https://03df18d0-0a94-4077-8b44-1f3cf8b7c870.filesusr.com/ugd/23a6c3_4ac5fd5c99f3441ea5d7754a47129898.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/wunixib.pdfIn PDF document text
    • https://63aa7d51-6c54-48cc-ac87-b710a0da19c3.filesusr.com/ugd/c8d394_fe1eb37d08094c44a71754fa65ef0578.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/70189877787.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/android_game_emulator_for_linux.pdfIn 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_off00010205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10205 3728 bytes
SHA-256: cec9fa155c6ab62ac7225f48c39dfbf51c6f7abcf56787afa5e5296a0a240424
font_01_sfnt_off00010f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F4B 5556 bytes
SHA-256: 6481465d291b7269ac48aa8853094af67a4e09ba455cdddd58bb1b18c724f2a8

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