Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d12eee9998a6cab…

MALICIOUS

PDF

88.1 KB Created: 2021-02-20 10:15:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b19ef80bcd92ada82474ca5b0ab30da SHA-1: 2c3090683600171104ec41cc7dcc2aa571ed86e6 SHA-256: 9d12eee9998a6cabfc782ea61fe988ce7eca8f68c908a1f057892224f32d2758
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'bologen.ru', which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to a book download, aligning with phishing or malware distribution tactics.

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://bologen.ru/wix?keyword=cirque+du+freak+book+pdf
    • https://cdn-cms.f-static.net/uploads/4394073/normal_602457fc31d4c.pdf
    • https://cdn-cms.f-static.net/uploads/4466675/normal_5fd1d8a8d329b.pdf
    • https://cdn.sqhk.co/kamozipu/L3hjYMz/strike_real_money_bowling_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4389394/normal_601ff701856e9.pdf
    • http://uanews.website/phases_of_the_moon_worksheet0tkwr.pdf
    • https://static.s123-cdn-static.com/uploads/4385869/normal_5fc9c7f2037a1.pdf
    • https://cdn-cms.f-static.net/uploads/4444369/normal_6021629d797ec.pdf
    • https://cdn.sqhk.co/kokuxisa/egcOV2x/alone_status_for_whatsapp_download.pdf
    • https://cdn-cms.f-static.net/uploads/4453338/normal_602e9bf3879d4.pdf
    • http://gatorama.site/zirasamoxevotofobojiv3cku4.pdf
    • https://static.s123-cdn-static.com/uploads/4501993/normal_5fe303393399f.pdf
    • https://cdn-cms.f-static.net/uploads/4380530/normal_601a67213f5ec.pdf
    • https://cdn.sqhk.co/kenipafitu/haU54Ao/action_ivry-_sur-_seine_france.pdf
    • https://cdn.sqhk.co/jazumagefo/gi6qcjg/sugarusizer.pdf
    • https://cdn-cms.f-static.net/uploads/4450154/normal_60220a6bb14fe.pdf
    • http://rizaxezo.iblogger.org/55065144435.pdf
    • https://static.s123-cdn-static.com/uploads/4486037/normal_5fffedffb6598.pdf
    • https://cdn-cms.f-static.net/uploads/4391909/normal_600bc62db9950.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jifakobere.rf.gd/fanaxigujosagevigo.pdf
    • http://wusipoz.rf.gd/la_siesta_del_martes_recursos_literarios_quizlet.pdf
    • http://bixuxopot.epizy.com/betejiwugibitiriwuwewera.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_off00011f07.bin
d2fe86c3bdcf963ebbc2acdcae0478df7c43d361f5139e6343cc9c0e08c6e7fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x11F07 5060 bytes
font_01_sfnt_off00013044.bin
e86d5434f972a9617d9a1609448d1dcd6f1a863679083f7170afd3ba28267e11
pdf-font-stream PDF embedded font (sfnt) at offset 0x13044 10108 bytes