Malicious PDF — malware analysis report

Static analysis result for SHA-256 829d5a70f90d15ea…

MALICIOUS

PDF

36.5 KB Created: 2021-05-22 07:36:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 081531f824e471cf409e7b68d6ed88d9 SHA-1: e5b9fb9ff85fa657e25e8aec2c2a019cf46f331d SHA-256: 829d5a70f90d15ea8a5c0e5d4faa2120842df4d6bab3864cbf519d6cc1ed2b6f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links and a prominent lure related to 'free followers and likes' for platforms like TikTok, Minecraft, and Roblox. These links redirect to external domains, indicating a phishing or scam attempt designed to trick users into visiting potentially malicious sites. The ML classifier also flagged the PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7067

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/free-tiktok-followers-and-likes-game-hack PDF link annotation
    • http://beaksandpawsfl.com/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/how-do-you-get-free-tiktok-followers_GM835599320.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_off00002e5c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E5C 23684 bytes
SHA-256: fc11929573a2ad71c4b44609fb005b05151aa53927216efedbb852a8026e5475
font_01_sfnt_off00006434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6434 2888 bytes
SHA-256: 2f5f0fc0bc2e44a39e81df338c202d2aa9228409b57f32fbedd5805dc83e19fa
font_02_sfnt_off00006e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E25 17868 bytes
SHA-256: 3d92bf9f97e5112d292b407947535e704fb05ee4c3221ca2b39c5e27e22079fe

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