Malicious PDF — malware analysis report

Static analysis result for SHA-256 15db9a4a69f18abe…

MALICIOUS

PDF

41.5 KB Created: 2021-05-21 22:21:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7fbc697513971de3f23814ef0b40b965 SHA-1: b3eb2357255404d5a9c5ddffc5744ccaab6f2e23 SHA-256: 15db9a4a69f18abe739dd1469a0de3f3499d25f2eed281c2f72cb344dc2d2170
82 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'hacking games' and includes a prominent link disguised as a generator. This link redirects to a malicious URL, likely serving as a gateway to a further payload or phishing page. The presence of a 'download button' heuristic further supports the intent to trick the user into an action. No scripts were extracted, but the PDF structure and embedded URLs indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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-hack-roblox-games-game-hack PDF link annotation
    • https://beauty911.tw/upload/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://beauty911.tw/upload/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://beauty911.tw/upload/files/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
    • https://beauty911.tw/upload/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000340c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x340C 34656 bytes
SHA-256: 39a3b6681fef7c9edac0d0a0520d6388724e7a24dc6b58525c82328e2498f17d
font_01_sfnt_off0000804b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x804B 18608 bytes
SHA-256: f0530f62cc2e234d68a11618bd0f649c02fcf1ebf2f14054a2e3aba439076e74

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