Malicious PDF — malware analysis report

Static analysis result for SHA-256 466ed93bd4794c8a…

MALICIOUS

PDF

69.8 KB Created: 2021-03-08 15:08:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84acef3c906fb0b472744ad25c35cf6b SHA-1: de8219e64793c56f85eb0dead7dd1d7b841464da SHA-256: 466ed93bd4794c8ae2ad926199ab90b339d5722615419cfa53fd67366b54f61a
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is presented as a search result for a solutions manual. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple unknown reputation URLs suggests an attempt to redirect the user to a malicious site or download a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/wix?keyword=chemistry+the+molecular+nature+of+matter+and+change+solutions+manual+pdf
    • https://mirexoxufi.weebly.com/uploads/1/3/0/9/130969656/7096257.pdf
    • https://cdn.sqhk.co/bagadogod/c1iegdQ/road_trip_car_driving_games.pdf
    • https://cdn.sqhk.co/tosobulig/hgvgeMt/nopebatunirumona.pdf
    • https://xadixolikiz.weebly.com/uploads/1/3/1/3/131380305/tanigipinat-basejavuxes-tufipis.pdf
    • https://pinabufibofux.weebly.com/uploads/1/3/2/6/132682338/e16a3d.pdf
    • https://cdn.sqhk.co/fabozesemi/gcgf3he/derobibalukugiki.pdf
    • https://cdn.sqhk.co/gepeduvo/ZV2ZChd/diablo_immortal_news.pdf
    • https://fepexugoroba.weebly.com/uploads/1/3/4/4/134469665/pawopa-sotemilo-nuxunukuzare-bivet.pdf
    • https://wonozonozosog.weebly.com/uploads/1/3/1/3/131398184/sevuloved.pdf
    • https://cdn.sqhk.co/dixejetafap/hjB0jeU/run_device_manager_as_admin_command_prompt.pdf
    • http://nakekizedexu.getenjoyment.net/2596513596.pdf
    • https://dezamemev.weebly.com/uploads/1/3/4/7/134746632/9fffd.pdf
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/kowigiwevutipen.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://samesesodore.onlinewebshop.net/puraxarekulonidulikozej.pdf
    • https://uploads.strikinglycdn.com/files/d85f8206-57ee-4f05-a24e-4148330bca9b/76296268224.pdf
    • https://uploads.strikinglycdn.com/files/9d3d4b0b-66f2-4321-ab8a-3e353c49176b/96243446443.pdf
    • https://uploads.strikinglycdn.com/files/6323f5f8-2f15-4f3d-b2f4-2fdff89df7a9/62582679108.pdf
    • https://uploads.strikinglycdn.com/files/6cf4209d-5186-4113-a8a7-8a839d8c90d7/dr_scholls_pedicure_foot_spa_instructions.pdf
    • https://uploads.strikinglycdn.com/files/d5ab0ea3-7bd6-41ff-ba8f-155685adaadd/wills_eye_emergency_room_near_me.pdf
    • https://uploads.strikinglycdn.com/files/d8bd120b-54c3-4f08-b6be-d44015d9a165/25_hp_johnson_outboard_motor_wiring_diagram.pdf
    • http://pevogikuxupeja.onlinewebshop.net/wipafadowij.pdf
    • https://uploads.strikinglycdn.com/files/a91dbd21-c431-4ede-8ad6-7d73509b9d15/which_books_are_in_the_catholic_bible.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_off0000d1e6.bin
c323ca2489b5d84bca7af2e68aa83ad9cea9bf6633c671fdf5b53212404cf1d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E6 5576 bytes
font_01_sfnt_off0000e4ba.bin
aae458603a54e0ac567f8ef8dce6fde630a489d8364bd551d5e9ee21133e6a67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BA 9932 bytes

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