Malicious PDF — malware analysis report

Static analysis result for SHA-256 988c2bf6e71a1f94…

MALICIOUS

PDF

38.4 KB Created: 2021-05-21 03:37:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 896b155e93b30f2b5e9e9f0c3e368921 SHA-1: 3f653a724ed026d2c18612255b39064e2a75bffe SHA-256: 988c2bf6e71a1f94006630170b1e8f750cc5e1d9379fe953e03afe888c6285da
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a call-to-action phrase, indicating an attempt to direct users to external malicious sites. The heuristic 'SE_SECRET_RECOVERY_LURE' suggests the document may also try to trick users into revealing sensitive information. The presence of embedded URLs and the lure of free game currency point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7268

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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
  • 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://netcdn.xyz/app/406889139/coin-master-free-coins-and-spins-daily-game-hack
    • http://www.occquimica.com.br/images/get-free-robux-today_GM431946152.pdf
    • http://www.occquimica.com.br/images/haktuts-coin-master-hack_GM406889139.pdf
    • http://www.occquimica.com.br/images/free-robux-hack-us_GM431946152.pdf
    • http://www.occquimica.com.br/images/free-minecraft-mods-for-pc_GM479516143.pdf
    • http://www.occquimica.com.br/images/coin-master-hack-apk-android_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032e4.bin
c0241b3d0fb414d47c65b69764a22e49660c1a7ed9629bd21e0b2e99d2dcefe2
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32E4 24428 bytes
font_01_sfnt_off000069dc.bin
d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
pdf-font-stream PDF embedded font (sfnt) at offset 0x69DC 2868 bytes
font_02_sfnt_off000073c6.bin
afe33923ca989cd5d8a4fb240de59bbfcccaf1928071fdd0e6e63d3de042dc3b
pdf-font-stream PDF embedded font (sfnt) at offset 0x73C6 18480 bytes