Malicious PDF — malware analysis report

Static analysis result for SHA-256 82517fcff5d4b277…

MALICIOUS

PDF

79.2 KB Created: 2021-03-21 21:57:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5c9f59bc1e1d6dba9d28759f2d260e0 SHA-1: 40b76645d5bb18c2265c851c5e46aa1fc61458c1 SHA-256: 82517fcff5d4b27745776ae7ece39b00e867cd353faa6f2b583f5a8f7e8f913f
96 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URL that leads to a suspicious domain, likely intended to host malicious content or phishing pages. The document body, though heavily obfuscated, appears to be a lure related to a product, suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/wix?keyword=chloe+narcisse+cologne
    • http://dibosezufo.getenjoyment.net/gefakonaz.pdf
    • http://munasimowijuxi.getenjoyment.net/zigizubixu.pdf
    • http://nizavevorupuj.mywebcommunity.org/vulino.pdf
    • http://vopukisavenif.medianewsonline.com/61368901011.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/77999b72-2301-4b09-b5b3-ae72c258db4c/mimideniwafiwilefexoxerek.pdf
    • https://uploads.strikinglycdn.com/files/7fe1fcc1-73b5-4861-8c77-42b36805e41a/dirt_bike_tracks_menai.pdf
    • http://medazupu.onlinewebshop.net/kawomeruvuwibotejagulema.pdf
    • https://uploads.strikinglycdn.com/files/25bb5323-7b8a-4650-a8b5-503d0e63bde7/baldurs_gate_2_companion_conflicts.pdf
    • https://uploads.strikinglycdn.com/files/831569af-8711-4169-829c-506a7dd6786b/nigujelelezagufamoku.pdf
    • https://uploads.strikinglycdn.com/files/12ae8162-d590-4d28-855f-0d1262768e3d/rufudovi.pdf
    • https://uploads.strikinglycdn.com/files/8670eddd-43b6-42a3-a449-ed88931ea29c/common_nouns_exercises_for_class_3.pdf
    • https://uploads.strikinglycdn.com/files/5f713cc7-28f1-4da1-ba80-b6cfded9b3bb/honda_snowblower_electric_chute_wont_rotate.pdf
    • https://uploads.strikinglycdn.com/files/4d42ee8b-1d26-4d3a-b2ce-67bc2cb20a26/gobedexivarewuvuguke.pdf
    • http://dijuvunote.onlinewebshop.net/65052395006.pdf
    • https://uploads.strikinglycdn.com/files/26279840-75a5-4cb0-986d-d3a713850ef8/77104334074.pdf
    • https://uploads.strikinglycdn.com/files/77d19a5b-8c2f-4476-ab7c-e5c090df1c10/electrical_engineering_technician_jobs_in_new_zealand.pdf
    • https://uploads.strikinglycdn.com/files/5624d229-480a-4b3d-8f26-49f746079aa7/ashton_sanders_movies_netflix.pdf
    • https://uploads.strikinglycdn.com/files/2f0cec91-c208-4606-a2d1-a770ca486591/how_to_write_sop_for_phd_application.pdf
    • https://uploads.strikinglycdn.com/files/438cab84-1f43-479a-9a87-2135887515d9/rebexekubasumeru.pdf
    • https://uploads.strikinglycdn.com/files/5850da79-f0e8-4981-ac89-fea873a7633b/can_i_use_a_plastic_colander_to_steam_vegetables.pdf
    • https://uploads.strikinglycdn.com/files/1888602e-87cc-4768-ba90-468446435744/titalasowowumidale.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_off0000ea2d.bin
c4b2e6c92d453aa5a48f5c58521facebed653855a564c7e67c37c292bd40afe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2D 4968 bytes
font_01_sfnt_off0000fb03.bin
287b765fdf9e71c004458a8d7d22ce3effd24e6812475155de9d763db41a4fff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB03 16624 bytes

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