Malicious PDF — malware analysis report

Static analysis result for SHA-256 88bafe501f963442…

MALICIOUS

PDF

74.8 KB Created: 2021-06-09 02:19:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab93e2aca5736c52dea808935961b2c9 SHA-1: 0f1d7d04901d1cb6d38482db252f603939b37f72 SHA-256: 88bafe501f963442fd55596d69a70b9b79e1ce177bac484209c0a9e8cdeb7881
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 flagged as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for credential harvesting or malware distribution. Although no scripts were explicitly extracted, the PDF 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://catamma.ru/pbw?utm_term=intelligent+business+teacher%2527s+book+pdf
    • https://static.s123-cdn-static.com/uploads/4493600/normal_5fe19f329e65d.pdf
    • https://cdn-cms.f-static.net/uploads/4373281/normal_602e3f6a5f271.pdf
    • https://cdn-cms.f-static.net/uploads/4406820/normal_604fcbb53f4cc.pdf
    • https://cdn-cms.f-static.net/uploads/4419198/normal_5fe82c7abc4dd.pdf
    • https://cdn-cms.f-static.net/uploads/4484624/normal_600f5739dcbdd.pdf
    • https://cdn-cms.f-static.net/uploads/4410730/normal_605efa1aecbe7.pdf
    • https://cdn-cms.f-static.net/uploads/4391893/normal_5fd5f71bdf994.pdf
    • https://cdn-cms.f-static.net/uploads/4481821/normal_600ddda9199d1.pdf
    • https://static.s123-cdn-static.com/uploads/4452846/normal_5ff711ad227ba.pdf
    • https://cdn-cms.f-static.net/uploads/4389801/normal_602e99416a0e4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/4e451dc7-a870-48cc-a0e7-255016c2bc4f/bimatofipejisebumumuf.pdf
    • http://xugilip.pbworks.com/f/asur_torrent_download.pdf
    • http://kesowununak.pbworks.com/f/povulodetunu.pdf
    • https://uploads.strikinglycdn.com/files/bf426515-fad7-4c49-ab71-a9943967426a/how_to_disassemble_a_hp_stream_laptop.pdf
    • https://uploads.strikinglycdn.com/files/b6855fcb-a657-4772-817a-3a49471b8b00/an_introduction_to_mathematical_statistics_and_its_applications_5th_edition.pdf
    • http://puzavofan.pbworks.com/f/givavamalenemifiru.pdf
    • http://dojejezo.pbworks.com/w/file/fetch/144797877/wings_of_fire_book_3_the_hidden_kingdom_read_online_free.pdf
    • https://uploads.strikinglycdn.com/files/d1f448b6-e0e3-4644-85a1-d93e50e3d892/my_cousin_rachel_book_plot_summary.pdf
    • https://uploads.strikinglycdn.com/files/dd565815-c450-47b8-b574-8da5c5e7161e/30607098909.pdf
    • http://redelaw.pbworks.com/f/gokexezejawiwegakuk.pdf
    • http://jojuzoxox.pbworks.com/w/file/fetch/144803037/72079544444.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c885.bin
f41d4a6b4b8f3aba48112ce9ccdc2517c08789d6c7346ebdbc55ea043f1ba35a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC885 3448 bytes
font_01_sfnt_off0000d4bb.bin
4e922cb263d4f84a50cdf2c3eac91f75fb0ce2008666c03346203d8a47847692		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BB 5476 bytes
font_02_sfnt_off0000e74b.bin
22183f57282ba2f7df1e71c6a48ac13d10e6db29ce1bf55171fd94bd581604a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE74B 12088 bytes
font_03_sfnt_off00010d2a.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D2A 4324 bytes

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