Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc22c4b7ed1662e0…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 18:57:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5d2ad4ff7afa7422abaeb95b8e6f63e9 SHA-1: 9b0d44bae6276139ca649090eb12d870f922f355 SHA-256: bc22c4b7ed1662e07016e48716fca7f301379ea1c623dd05687e4eeec0af1de7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, disguised as game hacks and cheats. The primary lure URL is http://netcdn.tw/app/406889139/how-to-get-free-coins-and-free-spins-coin-master-game-hack. While no scripts were extracted, the document's structure and embedded links strongly indicate a phishing or redirection attack designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-coins-and-free-spins-coin-master-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id/repository/roblox-work-at-a-pizza-place-money-cheat_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/hack-any-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-robux-obby-meaining_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/roblox-hack-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/roblox-cheat-engine-ccv_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/can-you-actually-get-free-robux_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_off00003343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3343 22196 bytes
SHA-256: e4b8e18ed2731a16b9294a6de3dcb7045e876dd81e1bfe1ce086b77b32e5f0b8
font_01_sfnt_off0000647e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647E 18512 bytes
SHA-256: adf3320439d2e3fb5c20242ae4a6e9a9860d2b477d2cc62f806f915b05578043

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