Malicious PDF — malware analysis report

Static analysis result for SHA-256 95aa522b0630358f…

MALICIOUS

PDF

71.0 KB Created: 2021-02-22 12:59:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0c2e020c5314f951024df14c3789c74 SHA-1: 76853b43fcb9fe57bfdd9c5645d32534c965a452 SHA-256: 95aa522b0630358f2ce47215e0180e4554a01e51ea2560079d13842f37b687d5
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'Toastmasters cc manual speech 8'. No scripts were extracted, but the presence of embedded URLs and the ML detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://druttle.ru/wix?keyword=toastmasters+cc+manual+speech+8
    • https://mazogerivajusem.weebly.com/uploads/1/3/4/3/134341978/goxunanibop_fobedale.pdf
    • https://pusotovoxidelo.weebly.com/uploads/1/3/1/6/131637553/aba47.pdf
    • https://sirususi.weebly.com/uploads/1/3/1/4/131407567/9551880.pdf
    • https://tuberosaguxe.weebly.com/uploads/1/3/1/4/131437792/7c86aebeb1b.pdf
    • https://rakevuxex.weebly.com/uploads/1/3/4/0/134040666/7819137.pdf
    • https://retariluwefise.weebly.com/uploads/1/3/4/8/134858211/tixuk-togexoxibebizib-jegizadi.pdf
    • https://cdn-cms.f-static.net/uploads/4416301/normal_5fd806aebbe90.pdf
    • https://siwuxamafovad.weebly.com/uploads/1/3/4/4/134489720/karawirasabe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pibabopuduj/9887408775.pdf
    • https://s3.amazonaws.com/xezonijida/mepofalom.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_off0000da6d.bin
9a184acfb2a41363226e81068e1b9883398437b85b2ebc40bf063c3fea3ed982		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA6D 5316 bytes
font_01_sfnt_off0000ec53.bin
4863b91d0a07bbec796275ca17e2337cb17673f553210cbd7219ce5169d5f31f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC53 10316 bytes

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