Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcd1486b958e9e48…

MALICIOUS

PDF

76.8 KB Created: 2021-07-14 06:36:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d2f825a9de910c92b95aa3ca05a44305 SHA-1: ba633f70a970c708d64903ffb9568bca0a69966e SHA-256: fcd1486b958e9e48e97d62ec2954123f70d3cbd467447d371516e22d0ef45436
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan threat. The presence of a visual download button lure, combined with an embedded URI pointing to a file download, suggests the document's intent is to trick the user into executing a malicious payload. The document body was unreadable, preventing a more detailed analysis of the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7604

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=sulthan+tamil+full+movie+free+download
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8d6fee2705b436309ba28/1625872126816/22679802565.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8de4831aaf5e928afb8b/1626115556476/brave_new_world_jessica_brown_findlay.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee4e4e8e3fff2bd3c1b8c2/1626230350264/is_35_too_late_to_have_a_baby.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_off0000cd2b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD2B 16792 bytes
font_01_sfnt_off0000e542.bin
7736c6692e9b21f5338a46789a3b822954ed1b51441f139187be25b9ec329f3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE542 10780 bytes
font_02_sfnt_off0000fde8.bin
974432b757d939a578f023beaffb2e422fd2ac9330c30bbac5617d07a3d5d1ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE8 16136 bytes

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