Malicious PDF — malware analysis report

Static analysis result for SHA-256 6517406a041b0848…

MALICIOUS

PDF

93.8 KB Created: 2021-07-14 02:37:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cd02c1a63d5807128b21124631d4e14e SHA-1: d2a663845e3b0320e3066828dab4a82f03689c01 SHA-256: 6517406a041b0848f6770a7019f471800b13d1df087c6523161640579bb2fb96
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of embedded URLs suggests a phishing or credential harvesting attempt. The exploitation of a PDF vulnerability is likely used to execute a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8599

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/qQn0o4eTdIQ/square?utm_term=the+audio+format+eac3
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e832034b964f05b84b8f85/1625829891725/nanegiberobinomopexavuk.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60eccf262727e05257a3fbe2/1626132262667/novugoparuxinesamures.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed07bcc50d503b9d538ee1/1626146749098/60168241536.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7e3fb80504e0a7769d4d9/1625809915811/bokuwuxigavujozisekorili.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8c4c34be6b65fb4b106cf/1625867459409/how_he_loves_is.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ede3c6172ba47bdac44a79/1626203078871/viriware.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e821bf687a3d659a4ef215/1625825727319/clueless_full_movie_123movies.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_off0001094e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1094E 16792 bytes
font_01_sfnt_off00012165.bin
cdca4b64bc94f4243f088d89065e10bc295925e23ffc7de68e90915c322a1c77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12165 10660 bytes
font_02_sfnt_off000139d5.bin
bcd6e49cc996039be4a54a589903274d1b0ab8f813d080f0501bdce018b55c40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x139D5 18080 bytes

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