Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab6bcb926e9f98d…

MALICIOUS

PDF

74.7 KB Created: 2021-07-15 12:13:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3a56ba487cb30e47d714cfcb0b7fc727 SHA-1: dd46449c0589370c2986583cb47a1e81c21ce764 SHA-256: 7ab6bcb926e9f98d8f2855e981add25da2ced87859cabe43bda3ab94e8ee21c4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The embedded URLs, although some are marked as benign, suggest the document's purpose is to redirect users to potentially harmful content. The PDF structure itself contains duplicate objects, which can be a technique used to evade detection or obfuscate malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8907

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/sq/ugae/~3/WVKuihPcy9U/square?utm_term=my+god+is+so+strong+and+so+mighty+lyrics
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee83512a4cda176261d241/1626243921899/kurekemaxowatuxoxawe.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eda699920f291d392150c6/1626187418261/19056148816.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60eff4da7fedc2490c09c6c4/1626338522245/zemanitugugupixuluke.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e901e4320dbd0de27fed0f/1625883108826/97273685657.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee11db07d0587a375fa67b/1626214875658/the_importance_of_chemistry_in_everyday_life.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8b5e2bfade41bb3167bf0/1625863650981/stairs_from_heaven.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_off0000c37c.bin
9afbdefd001ff38c06f1fd4b9edfe13a938d1c1709480ef5c9f9650c0ae06ae4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC37C 16368 bytes
font_01_sfnt_off0000ee62.bin
b4ed191bc233fe9d7b25afd08f0d84782d5344d03c561dfde41895442ed4c8ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE62 10792 bytes
font_02_sfnt_off000106cf.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106CF 16792 bytes

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