Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eafe80ed2a03fc2…

MALICIOUS

PDF

91.2 KB Created: 2021-07-15 20:39:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 39ae848bd9c5958271e40d3914a7b57d SHA-1: 6bcae6791476bcfea41f6bb442696541254f3b2c SHA-256: 2eafe80ed2a03fc2a7c416c649ea7e1d858f271d1af69408fd45cca5a0978878
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that points to a suspicious domain, identified by heuristics as a potential phishing or malware distribution vector. ClamAV also detected this file as a Trojan, further supporting its malicious nature. While no scripts were directly extracted, the presence of an external URI and the ML classification suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5959

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://pistant.ru/square?utm_term=whole+roasted+chicken
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8e3222210ba6bce0ec897/1625875234416/pokemon_sword_and_shield_how_to_evolve_eevee_into_sylveon.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec88165978cb5ccaab465a/1626114071017/exponential_function_two_points.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec977fc32416487af1465f/1626118015510/758572833.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f02aaa24fa75375d86f898/1626352298390/selling_car_to_dealership_without_title.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_off000104c5.bin
716384b0984e0dea89970892c1cbc2981ca10c2d5b8bf554cdd7114ab4269a31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104C5 17024 bytes
font_01_sfnt_off000130ea.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130EA 16792 bytes
font_02_sfnt_off00014901.bin
8238c5ecc2b477d08f5cefd782de5633c28a6d50737b9dbd1d9844f7f7cb7ed6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14901 10552 bytes

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