Malicious PDF — malware analysis report

Static analysis result for SHA-256 2df1a6cb8cfd596b…

MALICIOUS

PDF

40.9 KB Created: 2021-05-23 03:10:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ba56a50159d08fc8bcc104078609ceac SHA-1: 5132551a3fe8d1b68b0f8dc378af7f146dfdf5d8 SHA-256: 2df1a6cb8cfd596b2716d60cd0c47df12d8fffd7484047cdb4da3c2a5c9bf610
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and generators, specifically for 'Robux'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' directly indicates this malicious intent. The document body also contains phrases like 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7445

Heuristics 4

  • 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/how-to-earn-free-robux-game-hack PDF link annotation
    • http://gitagasht.com/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://gitagasht.com/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://gitagasht.com/images/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://gitagasht.com/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://gitagasht.com/images/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • https://collectrobux.coIn 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_off00003288.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3288 27748 bytes
SHA-256: d93e5c9deb2cc05d77335caa74a7ed5c6f925a0056db3d8a9e5b3e1eeee8dc80
font_01_sfnt_off0000718b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718B 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00007e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E33 18404 bytes
SHA-256: 14292e34eda5b41bb4f7162ff4266963adc8cc9da2edd2eb943feb3a845ce32e

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