Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc118d540907c390…

MALICIOUS

PDF

87.1 KB Created: 2021-07-19 15:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6e11d869a5bc2e60c3321ddf379c6d2c SHA-1: 257206e243e6a63f833344c233afe1fca60adfce SHA-256: cc118d540907c39095ee93f1aebcac8736a6b489042a798bf0d362d3f6f695bd
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by both ML classification and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, though many are marked as benign, suggests an attempt to redirect the user to malicious content. The file's structure and detection patterns are consistent with a phishing or malware delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8083

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/iXsW93xxTQA/square?utm_term=wow+classic+ragefire+chasm+quests
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec9161f4b4775d04a06627/1626116449441/13317187488.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e777c5cf132e35f05473a6/1625782213853/banufetobofatew.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60edc1247979814f85a4e52c/1626194213009/akorn_grill_instructions.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f05f1fd8e413227d1fd0dc/1626365727920/easy_beatles_songs_to_play_on_guitar.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f0671aeae63a0625b2ae2a/1626367770384/moxepasuwur.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_off0000f2f3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F3 16792 bytes
font_01_sfnt_off00010b0a.bin
c2a47f2d86ee981c96e28760a9f9054d345a39023b954d9f0ff29b7f9158fb62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B0A 11004 bytes
font_02_sfnt_off00012467.bin
bb0bdc8f8bbc0e12403e368b82422ed396fff833873dacd13c8bdba7929098e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12467 16944 bytes

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