Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc4769bbc2689854…

MALICIOUS

PDF

75.0 KB Created: 2021-07-16 18:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 33f7d550e1f204dd41bc7c502721decf SHA-1: c3280662003b4b58442f1b5c157d45de934e8ccb SHA-256: fc4769bbc2689854324d7b0fb0b3c5bb709dab3ac4db0c138eba88d17cb55d41
104 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. The presence of a 'download button' heuristic and an embedded URI suggests the document is designed to trick the user into downloading a payload. No scripts were extracted, but the overall structure points to a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8907

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/pL_UGxDroB4/square?utm_term=doctor+driving+mod+apk+android+1
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7d67f1873c46ac93954e3/1625806463706/weld_time_of_resistance_spot_welding_is_mcq.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec9393934d360eb289ad42/1626117011368/nirakudi.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8a692de9850677743baa/1626114665685/intercalary_day_meaning.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee4a06b82b304768612f81/1626229254723/kagugijokanixabomezez.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec9289704a383bbedaabae/1626116745366/the_legend_of_ba_qing.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8a52f89f8e700bf8256c/1626114642883/2k20_wwe_for_android.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_off0000c3f3.bin
6721ffe964fbe36b5ddd8cffa923259c4f158512f634b0bfc5a0dce7beb7682a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3F3 10720 bytes
font_01_sfnt_off0000dc5e.bin
9d93e46c9a4989dcad8510ff7b5bd189d46fc1a5399143df32c9922d16399789		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC5E 16748 bytes
font_02_sfnt_off000107f8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107F8 16792 bytes

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