Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ee490c981c8b29…

MALICIOUS

PDF

73.8 KB Created: 2021-07-13 01:03:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d7870f3e90fdb5072a16463fd1aed263 SHA-1: da569f8382a01b51fe48eabd4a16a83b62bbb42b SHA-256: 80ee490c981c8b29338f8dddc6859e18ea8537cf281c3404af75db0344485024
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The PDF contains embedded URLs that likely lead to malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into navigating to a harmful site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/sq/ugae/~3/AnJPYMJXbyQ/square?utm_term=174+cm+in+inches
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e9487f5ebba154a8fd9ec4/1625901184045/69900380569.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8203c1873c46ac93c5a94/1625825340904/21368465685.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e94b520cbdad4d35070d69/1625901906739/reading_passage_with_fill_in_the_blanks.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8094095719b356d94984c/1625819457018/5.7_a1c_level.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8be56d2f17c4cdf3f97fd/1625865814909/wububabatujemijexitokuza.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_off0000c36a.bin
e27e19ef1181b1827c7b200817598262b69f27a9ad1b382b54a1dfd1873e0709		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC36A 16144 bytes
font_01_sfnt_off0000ed75.bin
aee262005bf14906cf6f2187b18a54a9bc8c42a9fa5e57adc93bd97cc6223149		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED75 10052 bytes
font_02_sfnt_off000103a5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103A5 16792 bytes

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