Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd26127fdd9d30d1…

MALICIOUS

PDF

74.8 KB Created: 2021-07-20 05:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5bf5a834f35ed7e1fec2195b3946dad3 SHA-1: 3ec16755328597101f9eee312d3ce182dde65745 SHA-256: dd26127fdd9d30d1e32ef3f1cd425523433f3e53278f0b7d5731ca61df7a1c31
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ClamAV as a phishing trojan. Heuristics indicate the presence of an embedded URI, which, despite being labeled as confirmed benign in the provided data, is suspicious in the context of a malicious PDF. The ML classifier also strongly suggests maliciousness. The document body is heavily obfuscated and unreadable, preventing a clear understanding of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/W5vEtEh6t-A/square?utm_term=goat+cheese+bacon+pizza
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f43c9ab84a576e6c08c7b7/1626619034822/29971871895.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0b7b20a71fd0da9a6e7ca/1626388402841/customer_perceived_value.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f2a5d49ee5897bff9aaca9/1626514900521/16606770290.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec8f8545711547b6a728be/1626115973311/tom_and_jerry_classic.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8d69d781e3e37a185de44/1625872029781/french_in_action_mise_en_oeuvre_answers.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_off0000c3f6.bin
7edc4ff9611148abbd8972cd5fb7f92e213fc356239cfaa32b58ae757fc47051		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3F6 16740 bytes
font_01_sfnt_off0000efc5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC5 16792 bytes
font_02_sfnt_off000107dc.bin
586c9a807607181c534a71f30b0141532d15f4ef475570ec0683d32fcc171be5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107DC 10564 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.