Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6f17c2f795f5aa7…

MALICIOUS

PDF

74.1 KB Created: 2021-03-25 14:26:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e4b29425baa20953aafba1c6a9480caa SHA-1: e1ca526f39b8a0991897bb2fc92ce4fabfe4e357 SHA-256: b6f17c2f795f5aa7628e4abba6e40d11733bd440d98af44799b4fb68a39b71d0
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL designed to trick the user into downloading potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL, https://vilenefex.ru/wix?keyword=my+boy+emulator+full+version+apkpure, is the primary indicator of this phishing attempt.

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://vilenefex.ru/wix?keyword=my+boy+emulator+full+version+apkpure
    • http://bomufofo.iblogger.org/50_common_interview_questions_and_answers_download.pdf
    • https://cdn.sqhk.co/rorajakura/iiixhbp/cloudready_usb_maker_2._0_download.pdf
    • https://cdn.sqhk.co/muzexeragod/ih1MPuu/87772168733.pdf
    • http://movivuvafozor.iblogger.org/83531255108.pdf
    • https://static.s123-cdn-static.com/uploads/4368741/normal_5ff8da4e9838d.pdf
    • https://cdn.sqhk.co/butiluluvuk/a64geL5/unix_socket_server_example_c.pdf
    • https://cdn.sqhk.co/mixaluwekitu/ij6ThxT/ridor.pdf
    • https://static.s123-cdn-static.com/uploads/4368758/normal_5feec5e53ae74.pdf
    • http://lamisorosasam.mywebcommunity.org/47212067164.pdf
    • https://cdn.sqhk.co/kuwusemob/CtgeAkE/xujugu.pdf
    • https://cdn-cms.f-static.net/uploads/4410201/normal_5fe72158106a8.pdf
    • http://pobadabodoz.scienceontheweb.net/concepto_analisis_foda.pdf
    • https://cdn.sqhk.co/vamosopon/dhgkx8i/dulojigalusisodul.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wujanozo/bedsheet_cotton_ka.pdf
    • http://goxafebo.myartsonline.com/carrabba_s_menu_prices.pdf
    • http://zenoridofagokev.epizy.com/58750417558.pdf
    • https://s3.amazonaws.com/fosawef/87885092191.pdf
    • https://s3.amazonaws.com/zamuriza/how_do_i_create_a_training_plan_on_garmin_connect.pdf
    • https://s3.amazonaws.com/luropi/begum_jaan_full_movie_free_pagalworld.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_off0000e2fa.bin
dd59ad6e8e9ae0aa358855e8ea3c4d8f49d152614e926eaf2fad0f0bc3a6e1c4
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FA 5416 bytes
font_01_sfnt_off0000f56b.bin
2a250018a6c153a0d766a7fae41d2fbb3dc2a5ab1dbfd89afa72bb3f620bd855
pdf-font-stream PDF embedded font (sfnt) at offset 0xF56B 11104 bytes