Malicious PDF — malware analysis report

Static analysis result for SHA-256 5796d8479d5ff8ee…

MALICIOUS

PDF

65.1 KB Created: 2020-12-07 13:58:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 41e1cefcb3e4012a104bd9eeb9158122 SHA-1: 17283ba798fbbf0def112d56524626d767adf74a SHA-256: 5796d8479d5ff8ee956ca54c28bb3172d503cc611a3382d372aa0a7cfc50a374
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/123?utm_term=an+introduction+to+dynamic+meteorology+holton PDF link annotation
    • https://nepejudakolop.weebly.com/uploads/1/3/4/8/134876169/7d1f7c2a4375.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370778/normal_5fcd960c8c8a9.pdfIn PDF document text
    • https://rizowexerezo.weebly.com/uploads/1/3/4/2/134265486/edf074b8ee0ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475999/normal_5faf3d92f0054.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466680/normal_5fc715892d2d0.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/bf49f930-1ed7-4b46-ab43-d286c0564d9b/el_asunto_serie_critica.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f27ea13a450babf44921/t/5fc274bb3570fb44d15266a0/1606579391076/81379004813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1af9b664-be51-42bb-b7c4-242b74b2be12/25078294606.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc546b6a13a450bab114660/t/5fc7e5784bde7d3c2ce59a37/1606935928681/37933420027.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a7b2ff13940aa25ff9c1/t/5fcd7a75d336b863f0d86b88/1607301753028/riders_on_the_storm_bass_tab.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0df209955c744b53b696b/t/5fc364d7e18c5c478e66d8f3/1606640860058/haier_portable_ac_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bce5b43d-cccc-44d7-84e5-c19bff557303/forensic_crossword_puzzle_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/bluetooth_arduino_android_rc_car_code.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_off0000c276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC276 5264 bytes
SHA-256: 481be856d8638c7887e6487999f9c6bee1e876af0a8d15b5dd477870e07119bb
font_01_sfnt_off0000d438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD438 10464 bytes
SHA-256: ecdb9caf1ed251a02dc2f518a69802b92df0523a3ffb0ac9e9dc4924e374cce5

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