Malicious PDF — malware analysis report

Static analysis result for SHA-256 8010f178402ce2dd…

MALICIOUS

PDF

93.9 KB Created: 2021-07-20 19:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0b177d01c86de9681d015160a79990a0 SHA-1: 8832e511e42274500a0ab5d3930f29b199ef9a5e SHA-256: 8010f178402ce2dd2f3253a98d0c90756add992901aea386745111771c197593
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to redirect the user to malicious content. The PDF structure itself contains obfuscated data, and the wkhtmltopdf authoring application is unusual for a standard document, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5781

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/hIkXU_AiHkM/square?utm_term=biblical+significance+of+30
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f1444d5142327a8742d4d2/1626424398141/bs5308_standard_free_download.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0238e24fa75375d869ad2/1626350478351/the_wax_museum.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee5c5777e2cd4113f1fc07/1626233943495/blood_in_blood_out_full_movie_online_123.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee902eab0cb8743be8f645/1626247214640/the_mummy_2017_movie_download_in_tamil.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_off00010c21.bin
486413d22b0369f5b149ce37c5ba87d6aa5fc67e0836b8bbb899890b5416a3df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C21 10800 bytes
font_01_sfnt_off0001252c.bin
f584b8633ce6dbcf52bb51536e52cb6dcc68df3695d00c4a89019d125b0405f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1252C 17908 bytes
font_02_sfnt_off000153ff.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x153FF 16792 bytes

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