Malicious PDF — malware analysis report

Static analysis result for SHA-256 7953badbb048548c…

MALICIOUS

PDF

33.9 KB Created: 2021-07-19 18:00:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5d910229c29efdcebc17adb38006b4dc SHA-1: b75e1c0f6378ba5940148489efdc8d94ded093a0 SHA-256: 7953badbb048548c9a5f1df27ae442864492f38b17b79144322011e6b324458a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free generator' or 'game hack' lures. The document body reinforces this by mentioning 'Free Spins In Coin Master' and providing a direct link to a redirector. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a social engineering attack designed to lead users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 http://netcdn.tw/app/406889139/how-to-get-free-spins-in-coin-master-game-hack In PDF document text
    • http://ldjahorina.com/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://ldjahorina.com/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://ldjahorina.com/images/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://ldjahorina.com/images/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://ldjahorina.com/images/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://ldjahorina.com/images/free-tiktok-views_GM835599320.pdfIn PDF document text
    • http://ldjahorina.com/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://ldjahorina.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ldjahorina.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://ldjahorina.com/images/free-robux-discord_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
font_00_sfnt_off00002f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F58 23152 bytes
SHA-256: 4ccece8e4527b4c0cc03844c9b3d58861df88809f0c375855f42e7611a6d7cf7
font_01_sfnt_off00006372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6372 18052 bytes
SHA-256: 52b27d49d658c5dd219fe1685a79a71966a386845fdc62a41335e5719e4d5001

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