Malicious PDF — malware analysis report

Static analysis result for SHA-256 947935a31a267e3b…

MALICIOUS

PDF

79.1 KB Created: 2021-03-28 12:05:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 671a785e27354d1c902b296b2bbbe7ba SHA-1: 981e61000879b652f71bbf1aa0b725e86bc38067 SHA-256: 947935a31a267e3b7e5b450d2995740dc8ae770352eab125db05edbf5c5f4d58
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains an embedded URL that directs users to a site offering a manual for a toaster oven, likely a lure to disguise a phishing attempt. The presence of external URIs and the overall detection pattern suggest this PDF is 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://pelibifir.ru/wix?keyword=farberware+25l+digital+toaster+oven+manual
    • http://midunetojonawiw.mywebcommunity.org/36222213270.pdf
    • http://mugafopame.iblogger.org/73472276456.pdf
    • https://tatosemivuzufik.weebly.com/uploads/1/3/4/5/134599987/7769016.pdf
    • https://cdn.sqhk.co/xuteposidobi/ajbuieQ/best_soap_ingredients_for_dry_skin.pdf
    • http://ripotomip.iblogger.org/airtel_money_charges.pdf
    • https://cdn.sqhk.co/sisalubitot/dMic5ii/card_scanner_app_nfc.pdf
    • https://nulodikoz.weebly.com/uploads/1/3/2/7/132740439/nisurigedemoba.pdf
    • https://xuxoxipabixu.weebly.com/uploads/1/3/4/5/134588436/7933232.pdf
    • https://zudobusida.weebly.com/uploads/1/3/5/3/135330479/wulosukagimigo.pdf
    • https://cdn.sqhk.co/rubalibuzodi/ghgieja/pixoxapo.pdf
    • https://cdn.sqhk.co/zasemewiti/ezbtetQ/26919294691.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2b34bf77-5d26-48ee-b9e2-86f2fbea8c60/zigadagotimanuxolipunagil.pdf
    • https://uploads.strikinglycdn.com/files/af45de08-5ea8-445f-8fa4-a6d3cb07a453/kasekavanemifoka.pdf
    • http://kuporalegumema.epizy.com/explain_algorithm_and_flowchart_with_example.pdf
    • https://uploads.strikinglycdn.com/files/9df90bfa-9a05-4855-8d87-acb23d264201/char_broil_2_burner_infrared_grill_home_depot.pdf
    • http://gotuziput.epizy.com/all_old_blues_music.pdf
    • http://gikifipililiza.epizy.com/how_do_you_say_chrysanthemums_in_portuguese.pdf
    • http://mogixos.atwebpages.com/20917222372.pdf
    • https://uploads.strikinglycdn.com/files/87320aa8-c896-49d5-b46e-73d753d71af9/numivegofu.pdf
    • https://uploads.strikinglycdn.com/files/3279f80f-2116-401a-8d7b-2e95cddccff8/wisowilibanupopafugogogux.pdf
    • https://uploads.strikinglycdn.com/files/4fb44464-96e8-4cfc-9720-b112fd79f67c/guxitedov.pdf
    • https://uploads.strikinglycdn.com/files/a471e343-2b55-4541-a6fa-b6613afea188/what_is_rule_118_in_bud_not_buddy.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_off0000f6e6.bin
55f5cf7e0dacdf5af1992c8e91fdbc25e9c65de2eecddca69f8ef739911bd10a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E6 5648 bytes
font_01_sfnt_off00010a25.bin
d98ad537ead5dd01d82c62cc8f12c97c0ccea9651264ba9625c8fc6c8a532498		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A25 10824 bytes

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