Malicious PDF — malware analysis report

Static analysis result for SHA-256 f12de2174b6847aa…

MALICIOUS

PDF

88.3 KB Created: 2021-03-22 12:55:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9015dd9d4e75606c00d2e81c8c7a9542 SHA-1: bdaef608696bd27f46d02ee226f457eff115b85f SHA-256: f12de2174b6847aa51b2d348b95706ca8ab3b512b901522d7934258f48e67673
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a site related to 'Jump force next dlc characters', likely a lure to entice clicks. No scripts were extracted, but the presence of an external URI and the overall detection suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/strik?utm_term=jump+force+next+dlc+characters
    • https://cdn-cms.f-static.net/uploads/4421199/normal_6035ad0b77e6d.pdf
    • https://cdn-cms.f-static.net/uploads/4418188/normal_601ee92c0e4bb.pdf
    • https://cdn-cms.f-static.net/uploads/4419847/normal_60463b1ba84f7.pdf
    • http://xaraxag.mypressonline.com/79030732836.pdf
    • https://static.s123-cdn-static.com/uploads/4383460/normal_5ff4b5c87a1bf.pdf
    • http://jedilinosur.mywebcommunity.org/the_economics_of_money_banking_and_financial_markets_solutions.pdf
    • http://jotewelife.iblogger.org/google_spreadsheet_add_dropdown.pdf
    • https://static.s123-cdn-static.com/uploads/4455672/normal_5ff75b8be9b4f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://kekokid.epizy.com/77402092000.pdf
    • https://uploads.strikinglycdn.com/files/0039618f-914e-4802-9922-f05645a132fa/tuvolozilarotip.pdf
    • http://naluliwuv.epizy.com/86833111994.pdf
    • http://zilokujidetomo.epizy.com/bosajewuti.pdf
    • http://momedeturus.epizy.com/administration_of_criminal_justice_law_2020.pdf
    • http://tepaduvofevog.rf.gd/reviwujoz.pdf
    • https://uploads.strikinglycdn.com/files/60e37b49-d37c-4705-b7ef-ff2a1a2e2f50/42577455634.pdf
    • https://uploads.strikinglycdn.com/files/9441199e-231c-4589-b195-1a6dba54f85b/fizezejevirar.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7cd.bin
86e4e222c564b39aa8a1e43d1eef430a986ae5e1c9b7c7195d645e45afc40b5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CD 6356 bytes
font_01_sfnt_off00010cd9.bin
0e080330bf432521d09f6a2818b26c7859e6002d3179d6cc6ead2d29531ad8e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CD9 5284 bytes
font_02_sfnt_off00011eac.bin
e6655862ba15169e3ec46394ba4317510e33b802313bbe9928a92989624641da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11EAC 12344 bytes
font_03_sfnt_off00014601.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14601 4324 bytes

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