Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7320760a9b6ab67…

MALICIOUS

PDF

80.4 KB Created: 2021-07-18 20:03:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f1a0a1af3566b4d9bbe98fa8d9cb3cc1 SHA-1: c49a15b7747eb597087a2c5986ef316cb12bd7fa SHA-256: f7320760a9b6ab67e0579c4cd66227b77ab624ff8a068c237976b58c986e30df
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. The presence of embedded URLs, although many are marked as benign, suggests an attempt to redirect the user to malicious content or download further payloads. The PDF structure itself does not contain readable text, indicating it may be a container for malicious content or exploit code.

Machine Learning

  • Nyx PDF Classifier clean score 0.1467

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/~3/9xivtwLAy4k/square?utm_term=literary+terms+review+sheet+part+1+answers
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec7847de8c3264fe5db995/1626110023398/semispinalis_thoracis_origin_and_insertion.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f454bc27519501fc1bb46c/1626625213003/kiwabi.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_off0000dcc8.bin
35496dc625862cf812e0fc982ec88a8364378fd9f98978247e29762eb727123a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC8 16052 bytes
font_01_sfnt_off00010591.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10591 16792 bytes
font_02_sfnt_off00011da8.bin
aa8c5bdf2e87f366cc47931bc16364b23492cc5359acea1469ec50283008cd9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA8 10624 bytes

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