Malicious PDF — malware analysis report

Static analysis result for SHA-256 55ebcaf334d06e00…

MALICIOUS

PDF

37.7 KB Created: 2021-05-22 01:36:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 13b75f51a0579c0fc19100d39143246c SHA-1: aa0cde77b41af52695f622566ac0a03c312030d5 SHA-256: 55ebcaf334d06e0014fb29963926a4d39f25bc0d006219f062561fb35ab8702c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are disguised as 'game hacks' or 'free generators' for popular platforms like TikTok and Roblox. These links are designed to trick users into downloading further malware or visiting malicious websites. The presence of these lures and the ML classifier's high confidence score indicate a malicious intent to exploit user interest in free in-game items or platform advantages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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/835599320/how-to-get-followers-on-tiktok-for-free-game-hack PDF link annotation
    • https://lobergetart.se/images/free-robux-download_GM431946152.pdfIn PDF document text
    • https://lobergetart.se/images/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://lobergetart.se/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://lobergetart.se/images/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
    • https://lobergetart.se/images/minecraft-coins-free_GM479516143.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_off000030ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30FF 24600 bytes
SHA-256: f9227197c4af88039cccdeb35e452ee7537763dc6b6aadeea72bf33de2f642d8
font_01_sfnt_off000069b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B6 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off0000739b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x739B 17692 bytes
SHA-256: b635499a4f9fb6d9e8967cb3fdd5afd49967982b90c247824071efdea06cfe8e