Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b7225013ef65bc1…

MALICIOUS

PDF

77.1 KB Created: 2021-06-06 23:20:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 15461c4b6edf1a3b5e75931c98285196 SHA-1: 33e0e567dc35eb08a5ee4fe410da90c321ada8eb SHA-256: 9b7225013ef65bc188a449043381f342d9b3f9c93414eaaa03e1009ac8c60fba
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a malicious site for further exploitation. No scripts were extracted, but the overall structure and embedded URI suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://oniceh.ru/pbw?utm_term=how+to+size+surefire+ear+plugs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449974/normal_604368a5593af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379851/normal_600a0db1c00a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470532/normal_6019025296dee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369901/normal_5ff7c471aa083.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416151/normal_600a9303b1db2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464319/normal_602c4cb19c52e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402501/normal_60b80555c6de5.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/9dc092e4-baa0-4e8b-95f6-74ad13fb9a94/17696445781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3b204e4-4960-42e9-85bb-28c0dd7094b1/sijebogam.pdfIn PDF document text
    • http://gudotoxej.pbworks.com/f/reddit_nba_streams_down.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/485edad3-9324-4b46-a36d-a9b6d600ec6d/79524421249.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1db330ae-fe10-4bac-9057-2b7f4d34044e/battle_warship_naval_empire_mod_apk_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c5dbcce-8263-4ee2-8445-2b69c11afb3c/baldurs_gate_enhanced_edition_download_for_android.pdfIn PDF document text
    • http://lipadune.pbworks.com/w/file/fetch/144412788/photosynthesis_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e82e310b-f763-4397-b8df-7697424a8100/bissell_powerforce_compact_turbo_belt_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7306d114-2e83-4298-a160-084bd909a269/how_do_i_reset_my_yamaha_receiver_to_factory_settings.pdfIn PDF document text
    • http://vedufid.pbworks.com/w/file/fetch/144526350/juvupaziwogila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/780e634a-f56d-443e-b93c-9d69fc672586/14760438681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5881dce-b0af-40fb-9968-ae73d229e0c1/the_body_transformation_blueprint.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00926f7d-031b-4941-85d5-52bd721ff220/zavabopuzu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03647e60-b112-407f-b624-6e2e81941ee6/common_centroid_layout_technique.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2052dd82-1110-4995-b021-5fec09717575/27795307758.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_off0000eca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA5 5172 bytes
SHA-256: 4d2e5acf8de13fa782bdff6291df8d4bb912a83f4dad7e5c8ec7cb8479955fe6
font_01_sfnt_off0000fe64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE64 11440 bytes
SHA-256: 3a1178d9af2256532f60eec28bcd3b456fbb67903c9fdaa40a11f789e6d33c9c

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