Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad9f58eafabd37b0…

MALICIOUS

PDF

74.5 KB Created: 2021-06-04 22:26:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 211f6bf1fa0200e48691e941609f5d0a SHA-1: ec4a9a0ec18eac52c1eb423ef85e496f65943109 SHA-256: ad9f58eafabd37b01dee447712fa367b46319bcc75efccf3878877aa8920d63f
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://pixomot.ru/pbw?utm_term=2005+nissan+frontier+transmission+solenoid', which is likely the primary lure for the attack. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://pixomot.ru/pbw?utm_term=2005+nissan+frontier+transmission+solenoid PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447906/normal_6023f0067af70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490528/normal_5fd3179f10247.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384634/normal_606da3769976b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447263/normal_5fc67fe1080ad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a0cd35c-2ba9-4aa7-8b4b-7a9264468a80/48361363599.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2987432e-9b46-43f6-824d-05f8422da5f9/85913129812.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b07b2f4-eb67-4d33-8a50-6953260ecb62/xozuxutadujoxakojorefozaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88eb8e86-6c31-4eef-a03f-68ef9415d34e/the_man_in_the_high_castle_temporada_3_trailer_espaol.pdfIn PDF document text
    • http://nigezid.pbworks.com/w/file/fetch/144595122/16093749996.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66a9e7b1-78d3-4348-9753-fbac7248bbd9/the_most_common_phrasal_verbs_in_english_with_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86c3b536-196b-4ac9-8490-86764626de06/download_removewat_windows_7_build_7601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3454e24-cf46-4ff7-9f37-44bb6c16aa26/matlab_an_introduction_with_applications_5th_edition_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c49e4858-98d5-46f2-97d3-adf09c44c4de/thermo_king_reefer_container_manual_mp3000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8902dc1e-82fe-46e0-b42f-e0fefd708210/maat_the_11_laws_of_god.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1faca6e-8d9d-457b-af7b-2068e225f890/what_is_mdmp_stand_for.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84747304-c383-47de-bad8-fb6e4aeef760/51608589275.pdfIn PDF document text
    • http://rixepal.pbworks.com/w/file/fetch/144494103/intermediate_microeconomics_a_modern_approach_by_hal_r._varian.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d994c4b-1649-4c4b-b0ea-9f6e4eefac3d/99492121203.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f5af12f-8dd3-423d-bf39-2794dc133251/how_do_i_file_an_sss_acop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8427b2ba-b05f-4011-98c3-8a01218d2d94/download_driver_ralink_rt3290_bluetooth_01_for_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b28118cb-fe41-415d-8a70-9b6298fe5797/11082921323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca45036e-07a5-4c86-8d7a-c7989f5b7fe6/my_ishmael_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3338edf7-9874-4ae6-ab07-a57fdfa5e075/how_to_make_preferred_customer_in_herbalife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf1fea7b-9073-482f-8e22-1af2d66492a3/15281110189.pdfIn PDF document text
    • http://pimepovume.pbworks.com/f/kenmore_elite_washer_error_code_f27.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55ee591a-67f4-4ca1-9c33-c237221df916/gojez.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off0000e49b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49B 5356 bytes
SHA-256: c2f1761a48202cffbada85fa9f0f9d65167f3c339c0bfa7db4d2236c5ad98565
font_01_sfnt_off0000f6ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BA 11184 bytes
SHA-256: 67b1f6d124d84b6ca49475ad28c5e9ece2fc78d6552eeb189292ddece07bdadf