Malicious PDF — malware analysis report

Static analysis result for SHA-256 6acf2abf913cbb43…

MALICIOUS

PDF

74.7 KB Created: 2021-07-13 20:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fbe0e22f5f38360f5264be3ace8c6d59 SHA-1: c2e24fd8c7e4ce9a82aafd509f75dee64d723830 SHA-256: 6acf2abf913cbb43092632bb396b4dc7a61203dc1f606682a88b3403be80968a
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan, indicating a malicious intent. The presence of embedded URLs, although marked as benign, suggests a potential phishing lure or redirection mechanism. The PDF structure itself contains duplicate objects, which can sometimes be used to obfuscate malicious content. No scripts were extracted, but the overall context points to a phishing or trojan delivery attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3002

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://feedproxy.google.com/~r/razvivatel/yapz/~3/4Ji06Fp1PxY/square?utm_term=gong+yoo+plastic+surgery
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e874dd3249a603870a0d10/1625847005944/xizanan.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec943ee4ca3800a1191835/1626117182401/65350069426.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c155.bin
9d08ed9fe64c1cbb336385bb4ddce299a483a09aef68d5effa80619cc52d07ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC155 16756 bytes
font_01_sfnt_off0000eccc.bin
623815d7931a27e5771100d449b6c71448bbd16809c0374100032e4af3779f6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECCC 10800 bytes
font_02_sfnt_off000105f2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105F2 16792 bytes

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