Malicious PDF — malware analysis report

Static analysis result for SHA-256 83c2d184f4b1c4bf…

MALICIOUS

PDF

38.4 KB Created: 2021-05-20 18:50:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 72492c2a64f0f117036f2bafe7cb9d84 SHA-1: 837ace619e4c3402d63cefba9ad09d255fd5b1d3 SHA-256: 83c2d184f4b1c4bf1a2e0afcc5e98a8ea6dc1bf2eddb57038983356cb93b9606
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links that redirect to a known malicious infrastructure, specifically advertising 'free generators' or 'game hacks' for popular services. The document body and embedded links strongly suggest a phishing or scam attempt to trick users into visiting malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7268

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 https://netcdn.xyz/app/835599320/tiktok-bots-free-game-hack In PDF document text
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/play-games-for-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/tiktok-free-vs-paid_GM835599320.pdfIn PDF document text
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/how-to-get-java-minecraft-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_off00003190.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3190 25800 bytes
SHA-256: 87ecd0934e6bd2ef2d87b82f06be403c1c04d893886c51bbb81b135d57f3d317
font_01_sfnt_off00006c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2A 2944 bytes
SHA-256: e8dca988325d5b5adea380508eed68725fcb814536e93cd420f224b7166adc23
font_02_sfnt_off00007655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7655 17672 bytes
SHA-256: a5748a306d5dedee6cef7287dd19bf3453addeb109c4adb95b5d1029b10657c0

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