Malicious PDF — malware analysis report

Static analysis result for SHA-256 83a3d4733e0c7176…

MALICIOUS

PDF

74.5 KB Created: 2021-03-27 14:38:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd7321302914bb2a430327e29d8cd706 SHA-1: bfab15a895cdcfd2d47acd310db5a07b5e7128da SHA-256: 83a3d4733e0c7176726c0cf0f786d2d55c521ca49755143c1c262459c76f46a9
96 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing site or download further malware. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://leonvi.ru/wix?keyword=men%2527s+condivo+14+training+pant
    • https://cdn-cms.f-static.net/uploads/4479226/normal_60582554b927f.pdf
    • http://bugilinupapud.mygamesonline.org/escherichia_coli_trke.pdf
    • https://cdn-cms.f-static.net/uploads/4407318/normal_604165921e953.pdf
    • http://zikapipumimapo.22web.org/billing_information_apple_id_no_none_option.pdf
    • http://tomesopinobiz.iblogger.org/how_to_setup_your_bluetooth.pdf
    • http://risozeretelefa.22web.org/87404341859.pdf
    • https://cdn-cms.f-static.net/uploads/4449602/normal_601a14550012d.pdf
    • http://xewosaxebojufir.iblogger.org/what_did_the_sour_wine_represent.pdf
    • http://golulim.iblogger.org/ridafazelivatiw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/zerejibixupav/nowovuv.pdf
    • http://pisironebininuw.rf.gd/vivaldi_spring_piano.pdf
    • https://s3.amazonaws.com/nuruvapozixix/81815746285.pdf
    • https://uploads.strikinglycdn.com/files/26b072cb-e389-4c51-a4f5-75ccc3bb531f/how_do_i_invest_in_money_market_funds.pdf
    • https://uploads.strikinglycdn.com/files/859fa088-7ebe-49b8-aaca-2a64f8e6b009/what_are_the_words_to_you_are_my_sunshine.pdf
    • https://uploads.strikinglycdn.com/files/56162a4e-e1fa-4b22-9242-3ee9fe0e200f/79671570028.pdf
    • http://bumufemukelogik.epizy.com/android_application_graphics_developer.pdf
    • https://s3.amazonaws.com/farezelof/a_punjabi_video_song.pdf
    • https://s3.amazonaws.com/tezofuretejom/43160328505.pdf
    • https://uploads.strikinglycdn.com/files/1117cd42-205f-4ebc-930c-fa7a871bec13/gewezulifodasika.pdf
    • http://nukivamo.myartsonline.com/plywood_boat_building_plans_free.pdf
    • http://dijutago.rf.gd/59765991825.pdf
    • https://uploads.strikinglycdn.com/files/8a41df7c-b75f-458f-977f-9e5d65511759/gavanejilez.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd8a.bin
96eb84f5914663870a543ecdd64d3896173da8d3abae704c3bad73808a744fb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8A 5236 bytes
font_01_sfnt_off0000df82.bin
07cb3aa993bd959da680da056237900429669d987dde6a9b898dda1245576408		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF82 14660 bytes
font_02_sfnt_off00010c6b.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C6B 4324 bytes

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