Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d684cfb8b736ce2…

MALICIOUS

PDF

41.9 KB Created: 2021-05-20 18:46:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9944a1f9172d601537a7ade8f7fd7213 SHA-1: 100022b805660b4984039eeadd804d7bc3de6123 SHA-256: 6d684cfb8b736ce2a23e962c8601ddcd028879d05d47880bc6e6cfb01a35d5d2
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains lures for 'Free Robux Generator Codes' and explicitly requests 'recovery secrets, private keys, backup codes, or saved passwords'. It embeds multiple URLs, with the primary one being 'https://netcdn.xyz/app/431946152/free-robux-generator-codes-game-hack', which is likely a phishing or scam page. The document's structure and content strongly suggest a social engineering attack aimed at harvesting user credentials or financial information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7527

Heuristics 5

  • 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.
  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/431946152/free-robux-generator-codes-game-hack PDF link annotation
    • https://elearning.matsanesa.net/__statics/gudangsoal/files/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.matsanesa.net/__statics/gudangsoal/files/coin-master-support_GM406889139.pdfIn PDF document text
    • https://elearning.matsanesa.net/__statics/gudangsoal/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://elearning.matsanesa.net/__statics/gudangsoal/files/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • https://elearning.matsanesa.net/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000355b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x355B 28264 bytes
SHA-256: 380adb70da4db47c2f79db54bdec097128ab661d861b82258040249313cd5136
font_01_sfnt_off0000766d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x766D 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00008197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8197 18520 bytes
SHA-256: a3c42500ab941ca6b3cc9f1b186676fd5f7f9f0c0249e27b539405b68f11e4ed

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