Malicious PDF — malware analysis report

Static analysis result for SHA-256 df22033db2f3fa59…

MALICIOUS

PDF

76.3 KB Created: 2021-03-25 16:08:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95e6c46b64a0d01030d7acde61ed2550 SHA-1: d1127b72286ebf36b28b5867996ebeccb7253eff SHA-256: df22033db2f3fa590e7eb4857de026234104b4148de9f40378113a2075724a3f
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, suggests a lure related to 'The great gatsby movie worksheet', likely intended to trick the user into clicking the embedded link.

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://xezojetit.ru/wix?keyword=the+great+gatsby+movie+worksheet
    • https://tojejalunegod.weebly.com/uploads/1/3/2/7/132710717/9530116.pdf
    • http://golixudib.mypressonline.com/53811559933.pdf
    • http://zefedupawomodos.22web.org/branham_sermons.pdf
    • https://cdn-cms.f-static.net/uploads/4503309/normal_603fbd14a1151.pdf
    • https://static.s123-cdn-static.com/uploads/4462038/normal_600100cf69f77.pdf
    • https://kivobuduzuv.weebly.com/uploads/1/3/0/7/130739084/mevalojotidivowu.pdf
    • http://sebevifa.getenjoyment.net/jusogimolatikodeja.pdf
    • https://cdn.sqhk.co/xonipavu/eWjaXoe/66079513458.pdf
    • https://xevekefipozi.weebly.com/uploads/1/3/1/4/131406281/numilimalise.pdf
    • https://cdn.sqhk.co/sipebesoxu/gjpcJjg/tozogivubimafoduvoge.pdf
    • https://static.s123-cdn-static.com/uploads/4380214/normal_5fed46c6ae780.pdf
    • http://riwaxutitono.iblogger.org/70503772681.pdf
    • http://nadefememidep.medianewsonline.com/manulizimosidu.pdf
    • http://dikegebe.mygamesonline.org/does_the_total_money_makeover_work.pdf
    • https://static.s123-cdn-static.com/uploads/4367656/normal_5fd079fc7da7a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sanojepenot.onlinewebshop.net/77469983011.pdf
    • http://gubawakelu.onlinewebshop.net/how_many_subjects_statistical_power_analysis_in_research.pdf
    • http://vuzozan.epizy.com/purodu.pdf
    • http://xefiposokupama.myartsonline.com/12540884985.pdf
    • http://duwagisu.epizy.com/centrelink_online_reporting_times.pdf
    • http://wizebefekeb.epizy.com/facebook_facebook_mobile_free.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_off0000edbb.bin
cff22e54deb0495af07b0c3768b5cb4154dd6f1d782c1c8e051cab39e5e23019
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBB 5472 bytes
font_01_sfnt_off0001004b.bin
f61fbc40e50ecbd97c6ebe26d2de013daee77e9fd43395c7f663a993e1e647c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x1004B 10496 bytes