Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c7e3a208a52a9aa…

MALICIOUS

PDF

71.7 KB Created: 2021-03-01 04:55:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f06b4828ddd445ac7eb216d1d05b4cf0 SHA-1: 64b254a80809e4abf8bb99afa64d723c5cb3eff3 SHA-256: 2c7e3a208a52a9aa3f3704f95bec01933fea8b62fa94e094a9a9033dea8a2906
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a site offering a "free pdf download". This URL, along with other embedded URLs, suggests a phishing or social engineering attack. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a secondary payload or lead the user to a phishing site.

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=the+power+of+intention+free+pdf+download+full
    • http://sendgrid-de.com/kabowexawenajogausfxu.pdf
    • https://cdn-cms.f-static.net/uploads/4454048/normal_602fa29cf06e3.pdf
    • https://cdn.sqhk.co/busumodofu/UjdgeiQ/hmrc_grant_self_employed_august.pdf
    • http://atomyimperial.ru/ford_service_centre_near_me3og3k.pdf
    • http://gepexoliv.medianewsonline.com/wiwiwenuwum.pdf
    • http://ubsvp.com/sony_fs700_4k_upgradet09v6.pdf
    • https://cdn-cms.f-static.net/uploads/4492600/normal_602117ddae81c.pdf
    • https://cdn-cms.f-static.net/uploads/4417830/normal_603bd7b14ed08.pdf
    • http://fitdieta.com/wamitigm1yyc.pdf
    • https://cdn-cms.f-static.net/uploads/4462976/normal_5fd13cb2bf668.pdf
    • http://kosamaritaj.getenjoyment.net/what_does_sublime_mean_in_there_will_come_soft_rains.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://nukivamo.myartsonline.com/dilamibiwefin.pdf
    • http://dapizodipe.myartsonline.com/bopexezajopawuvawopozer.pdf
    • http://roxewew.epizy.com/jokogunoguwodoto.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_off0000d08b.bin
9bf3dd99de39da8d3d0182e522237005543d521ad8b120e4ef46c6f711dea0a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD08B 4872 bytes
font_01_sfnt_off0000e121.bin
daa4df53a53a0bc7bcb913e6e3e24b03518c0bf4740c5529dfbad6b60c839663		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE121 10132 bytes
font_02_sfnt_off000103e2.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103E2 4324 bytes

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