Malicious PDF — malware analysis report

Static analysis result for SHA-256 3470efe8cd66ef9a…

MALICIOUS

PDF

30.2 KB Created: 2021-07-03 12:01:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5ec22e91ca5a5fcd558982561629f891 SHA-1: 91db9fa9f71e8f4b9411bc77ac96d2b464a02071 SHA-256: 3470efe8cd66ef9a0b95bbe6e928e2952ec1097d3afef6cb78686ef6d23b5841
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appear to be game hack generators or free item sites. The primary link, http://netcdn.tw/app/406889139/free-spins-coin-master-october-13-2021-game-hack, is flagged as a malicious redirector. The document body and embedded URLs suggest a phishing or scam attempt leveraging popular game titles to entice clicks. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/free-spins-coin-master-october-13-2021-game-hack In PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/pokemon-go-free-revives_GM1094591345.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/free-masks-in-roblox_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/xyrex-roblox-hack_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/pokemon-go-free-friend-codes_GM1094591345.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/village-coin_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002e36.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E36 23036 bytes
SHA-256: 497c2fed9d8aa7b59a1995ac024f1de393e83b8c47efc2db181b7f307ee35a0d

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