Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6f79c2b10001496…

MALICIOUS

PDF

73.1 KB Created: 2021-04-15 06:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71c5324e37aaf3f405b79cedc2692e8d SHA-1: bc672cebdc4935f284c7e95313ac24bfde469263 SHA-256: b6f79c2b100014961e929b1f4cd79e7d7cdb8021bcda360dff47708559a43401
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, which is flagged as malicious. The document body, though heavily obfuscated, appears to be related to 'program portfolio management definition', likely a lure. The presence of an external URI and the ML classifier's high confidence score indicate a phishing attempt.

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://nipisod.ru/strik?utm_term=program+portfolio+management+definition
    • https://cdn.sqhk.co/majumoros/hdiict2/general_online_store.pdf
    • https://bipinudaw.weebly.com/uploads/1/3/4/7/134718108/6487429.pdf
    • https://dadikokaw.weebly.com/uploads/1/3/5/3/135347495/jekumakubedonivewaru.pdf
    • https://cdn.sqhk.co/padumaxifop/kPrjn1F/agilent_34410a_service_manual.pdf
    • https://cdn.sqhk.co/ranemagesoga/fEhcfU9/92278966344.pdf
    • https://cdn.sqhk.co/nisikevepoxi/fict9je/futuzuzilisa.pdf
    • https://dumuzuvo.weebly.com/uploads/1/3/4/6/134695275/jopaloku-vomefirenega.pdf
    • http://limezage.scienceontheweb.net/jikelezopekotewozi.pdf
    • https://cdn.sqhk.co/bomemenun/0WCwgc6/24773456484.pdf
    • http://tobafoxapupudug.iblogger.org/april_2020_marathi_calendar.pdf
    • http://wuxetij.mypressonline.com/waguvogugedetuvixufa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d90c1c14-4b61-4e94-9a03-9aa8f013820d/zekiwiwikevofaroze.pdf
    • https://uploads.strikinglycdn.com/files/2531fe32-f2ca-4a0a-bd03-b03bd55e13e4/autocad_3d_commands_with_examples_in_hindi.pdf
    • http://fuvuvadut.onlinewebshop.net/14123640834.pdf
    • https://uploads.strikinglycdn.com/files/d52c1e78-c365-4824-a284-06346a459a92/my_cloud_mirror_gen_2_user_manual.pdf
    • https://s3.amazonaws.com/mukutud/bamboo_sheets_versus_cotton.pdf
    • https://s3.amazonaws.com/rurovikejigibu/realidades_2_capitulo_1a_vocabulary_production_answers.pdf
    • http://xejobutek.onlinewebshop.net/guwosalemukulatotivijaf.pdf
    • http://jalijoruki.atwebpages.com/how_much_can_software_tester_earn.pdf
    • https://uploads.strikinglycdn.com/files/46346c3d-b96a-47e7-b315-226c50f05c61/godelokebamonebebot.pdf
    • http://gadusevi.rf.gd/kinikatiro.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_off0000e379.bin
5e9d302f272df1a2b04924d2c9513ce8f3157153234ec257b07b3c6464c4a638
pdf-font-stream PDF embedded font (sfnt) at offset 0xE379 5184 bytes
font_01_sfnt_off0000f509.bin
9c03335bf94c70ea34b1224a7e7ed5d5eaa87e86d42a9d017a8506553f9fcc93
pdf-font-stream PDF embedded font (sfnt) at offset 0xF509 9984 bytes