Malicious PDF — malware analysis report

Static analysis result for SHA-256 f389e6fe0d9e00b8…

MALICIOUS

PDF

79.9 KB Created: 2021-07-13 16:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5bcf5db7a6981e4e3091e6ea1bfe045d SHA-1: 30c0c526de83525624e86af5004c2223d54a7c30 SHA-256: f389e6fe0d9e00b8b0e914176b247ecb7bb1ef81c3f4509bde74062922a3e77b
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, suggesting it may redirect users to malicious sites or attempt to download further content. No scripts were extracted, but the presence of embedded URLs and the phishing detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8049

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/razvivatel/yapz/~3/XMoLd4EPXkg/square?utm_term=vsrs+system+and+formworks+inc
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e924dce6a58043b691c17d/1625892060727/jesus_jesus_jesus_there_is_no_other_name_by_frank_edward.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec906351a87c5d75ace5b1/1626116195646/average_pay_for_surrogate_mothers.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8fac28fb24157da6e83fa/1625881282546/sarirujolexejizomob.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8c066ad76c09749119d9/1626115078535/2628982553.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7f7a288cf71862a91c82/1626111866596/1601088608.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_off0000d35a.bin
aa16d686891003f1bccc4f6debefe12efd9b52e1d98f689a67b49d4272a79d75		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD35A 10852 bytes
font_01_sfnt_off0000ec91.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC91 16792 bytes
font_02_sfnt_off000104a3.bin
8100a80ffbbf500ffa67c24f233ed87d5ce1ea9ce83c15dda60e542e36124947		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104A3 17860 bytes

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