Malicious PDF — malware analysis report

Static analysis result for SHA-256 08973557d63805f6…

MALICIOUS

PDF

79.3 KB Created: 2021-03-10 06:47:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 841deb0af73a9f97f9e3db0ff75f016e SHA-1: e91b97e72f9b7320839e2ef868c7baabcb151277 SHA-256: 08973557d63805f66eeb4b0b51b757c52e8b1ed5dbceab51e5ee2c92ee99af31
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://jacksth.ru/strik?utm_term=is+1893+earthquake+code, is a primary indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to redirect users to malicious content.

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://jacksth.ru/strik?utm_term=is+1893+earthquake+code
    • https://static.s123-cdn-static.com/uploads/4452621/normal_5ffa04e13675c.pdf
    • https://wezuzasiteva.weebly.com/uploads/1/3/1/3/131397996/bunufokemon-sofid-jifelavesu-jumisusinifina.pdf
    • https://xopugexufejan.weebly.com/uploads/1/3/4/7/134709921/ccd82ff297d656.pdf
    • https://cdn.sqhk.co/kekelivig/jjghYje/6870911000.pdf
    • https://cdn-cms.f-static.net/uploads/4453553/normal_600dc06ae1774.pdf
    • http://nuxuzuruguli.mypressonline.com/canon_powershot_a720_is.pdf
    • https://cdn.sqhk.co/nobutowug/Ggejfig/global_strategy_definition_in_management.pdf
    • http://lofajemami.sportsontheweb.net/norcold_rv_refrigerator_problems_solutions.pdf
    • https://static.s123-cdn-static.com/uploads/4420602/normal_5fdddafbc207c.pdf
    • http://napodosawukezob.getenjoyment.net/favove.pdf
    • https://static.s123-cdn-static.com/uploads/4484156/normal_5fe419111f883.pdf
    • https://static.s123-cdn-static.com/uploads/4494440/normal_5fddf170507e9.pdf
    • https://static.s123-cdn-static.com/uploads/4388813/normal_6005c92d1722c.pdf
    • https://cdn-cms.f-static.net/uploads/4428061/normal_600fa10fd0d9d.pdf
    • https://cdn.sqhk.co/kafekogi/XihYjc1/nexekuzumisodabifimujol.pdf
    • https://static.s123-cdn-static.com/uploads/4369190/normal_600523cbd83d3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tudixuzaw.onlinewebshop.net/96704769115.pdf
    • https://uploads.strikinglycdn.com/files/04b859df-7ec1-4285-92f8-7f2e63495b09/14058811494.pdf
    • https://uploads.strikinglycdn.com/files/acf19f09-e7f7-487c-90e8-e676990f8d55/superman_and_me_sherman_alexie_audio.pdf
    • https://uploads.strikinglycdn.com/files/97c9c284-b869-4f4d-a32d-38dda257757e/allworx_phone_manual_9224.pdf
    • https://uploads.strikinglycdn.com/files/7c079bbf-1c3d-46b1-8e34-0bcf122b3f1f/wapojib.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_off0000f94c.bin
84a555fb52e2b1636a289fe01fca0fb5ce4e87566e07a26236547306018cd50a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF94C 5688 bytes
font_01_sfnt_off00010c9d.bin
69d6826a281cee2f172228a23e46ce1cd5817b4913f9e78330d75cc6c2d8a57e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C9D 10460 bytes

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