Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d4e925def4c5af8…

MALICIOUS

PDF

76.4 KB Created: 2021-07-17 23:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 60acecb00a9cff67677261e58d18b0f6 SHA-1: cb6b16e810bb93dbd1f8f8d150303628532be13f SHA-256: 9d4e925def4c5af83d1c14ef3c76d3073b5243714333cb627c4c9d5734c27be7
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or trojan delivery mechanism. The PDF contains embedded URLs, one of which points to a resource that could be used to host a secondary payload. The document body is heavily obfuscated and unreadable, preventing a more specific analysis of the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7746

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/razvivatel/yapz/~3/nCRFBnYrBHY/square?utm_term=top+selling+candy+bars+2019
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f1ad5f3386d078c70e8af3/1626451295675/faded_and_closer_mashup_mp3_download.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f06b3a1c6cf24172e4d859/1626368826645/rollermouse_red_manual.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e851d1989f483ba2f65ae6/1625838033664/bitokotomara.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8f3a3854c1d3b348514e5/1625879459390/91143630839.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_off0000c753.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC753 16792 bytes
font_01_sfnt_off0000df6a.bin
28586dbd88cda3cbd6f7f089d887b104c3e40e81604a911ab569348ef953f3a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6A 11268 bytes
font_02_sfnt_off0000f9a3.bin
500447d044f0d3a86ca711fa72161ab173de4a88f0dff339934fa500cb95d028		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A3 16992 bytes

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