Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bace3b50c381798…

MALICIOUS

PDF

76.8 KB Created: 2021-07-15 17:35:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f97f68d9152d3f0fdfc748805e8899fb SHA-1: b045ca4ba3da4c855670051ed7b6ae0a84b5bf68 SHA-256: 8bace3b50c381798987fd3d889c905008d963dd15280f0325394c93dc2d08e49
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains an embedded URI pointing to 'https://medvor.ru/square?utm_term=carrom+pool+coins', which is likely the primary lure. The heuristic 'SE_DOWNLOAD_BUTTON' suggests a call-to-action, reinforcing the phishing or malware download intent. No scripts were extracted, but the PDF structure and embedded URI are sufficient to infer a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7939

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://medvor.ru/square?utm_term=carrom+pool+coins
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e85e0dc66c492f81b190d0/1625841165303/1_megabyte_is_equivalent_to.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7afa481ab8d1aa9dcbb22/1625796516440/guzobumojawotiwobozen.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec9f87704a383bbedc231b/1626120071474/gta_5_mods_ps4_free_online.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_off0000cc01.bin
a85a1ac6be54aa597edfb19add5527511b6f9d659d2fe5d0937ca441638e7d72		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC01 10336 bytes
font_01_sfnt_off0000e336.bin
b83dbcae9495bf8c3da83876eaae47cf64e57c4f6d2d6d59361269bee179d2eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE336 16668 bytes
font_02_sfnt_off00010e28.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E28 16792 bytes

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