Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1daac407a1d10cf…

MALICIOUS

PDF

76.2 KB Created: 2021-04-05 23:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 621f0338722c6bf56166c2ad0fdbba00 SHA-1: d71ac3a5354a7c42c715b16e506d5ea652cb8f65 SHA-256: d1daac407a1d10cf83d20e9ca3e08ebcfa713ab998caa6afb8bb3503b8c3d983
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'botokaw.ru', which is likely used for phishing or to serve further malicious content. The document body, though heavily obfuscated, contains keywords related to a flea market, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/wix?keyword=white+cloud+flea+market+2019
    • http://kiratemize.22web.org/when_rome_is_burning.pdf
    • http://tameeniraq.com/764128062272phbr.pdf
    • http://zageketukux.iblogger.org/paraiso_perdido_paraiso_recobrado.pdf
    • http://aycotoro0.xyz/plexos_nerviosos_del_cuerpo_humano1mewb.pdf
    • https://cdn.sqhk.co/dufolatik/jfOWBPE/piggy_wiggy_nuts_game.pdf
    • http://ladariduzaw.22web.org/numbers_and_dates_in_english_exercises.pdf
    • http://hamsterbig.com/how_to_make_successful_quotes_for_instagramxc7fc.pdf
    • https://cdn.sqhk.co/wajerewuwer/bijnjbt/passcode_lock_screen_bypass_coolpad.pdf
    • http://copyrightviolationcenters.com/hunchback_of_notre_dame_2_charactersp8x1x.pdf
    • https://cdn.sqhk.co/bijininabex/iiyRSgd/53995012555.pdf
    • https://cdn.sqhk.co/razefudixid/hdVQnic/hillsong_worship_songs_2019_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9aebc325-966a-4177-95af-f4d04413bc8b/66639508574.pdf
    • https://uploads.strikinglycdn.com/files/ecc6d81d-86b5-49aa-99d9-95976b971e28/girivinivobosipeb.pdf
    • http://jitetiwax.rf.gd/piteja.pdf
    • https://uploads.strikinglycdn.com/files/1232e7e4-5aa9-48b4-8009-e86bfe1903c7/pedopujorexos.pdf
    • https://uploads.strikinglycdn.com/files/60c06bf0-4a9d-4ff2-af26-b553db2ab53d/dremel_395_parts_list.pdf
    • https://uploads.strikinglycdn.com/files/a57f347c-6125-4138-ab0f-f0577efdc0fe/medical_assistant_books_2020.pdf
    • https://uploads.strikinglycdn.com/files/dc8562c0-e142-4a19-a837-aaee1dff51ce/how_to_clean_a_kel_tec_p3at.pdf
    • https://uploads.strikinglycdn.com/files/b4140020-a7bb-4f0d-ac92-c4f11ff67107/matlab_2018a_download_linux.pdf
    • https://uploads.strikinglycdn.com/files/d689a02b-5064-43b8-b169-2f872e708e8d/aspire_cf_vv_battery_1600mah.pdf
    • https://uploads.strikinglycdn.com/files/1b50568b-763d-4642-ae0d-b09ec68ea933/cooler_master_haf_912_side_panel.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_off0000ea67.bin
0518f0991a268be7eb7e71f9a804746c2cefcb4c99a5b1ee83037163ede3fc5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA67 5640 bytes
font_01_sfnt_off0000fd84.bin
028f361ef876bdf8ab31facf47c3d2605e06933308e3f3983f5934a8bf19c002		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD84 11208 bytes

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