Malicious PDF — malware analysis report

Static analysis result for SHA-256 8deb4c19e1807595…

MALICIOUS

PDF

35.2 KB Created: 2021-06-25 15:08:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 42d1142aa713d66efc96726253342401 SHA-1: 919af84601d4638e8cb87dfa6fd3ec44a4f6b89f SHA-256: 8deb4c19e1807595ed45b89d657cd56f8b0141ea888a7a13b31b62c27e1ca1d0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded links that lead to malicious redirectors, disguised as "free game hacks" for popular games. The primary link directs to http://netcdn.co/app/431946152/roblox-my-hero-bizarre-mixture-quirks-free-game-hack, which is flagged as a malicious redirector. The document body and heuristics indicate a lure to trick users into clicking these links, likely to download further malware or engage in phishing. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.co/app/431946152/roblox-my-hero-bizarre-mixture-quirks-free-game-hack In PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/theme-park-tycoon-2-free-download-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-money-hack-cheat-engine-63_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-tips_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-hack-a-roblox-server-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/system48-roblox-hack_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-hack-roblox-june-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/javascript-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-instal-roblox-hack_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_off00002f9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9B 22556 bytes
SHA-256: 9714a74bab52345d136ee611947a7f3d57dc8101bc09f5082dc36e73a9cde361
font_01_sfnt_off0000620d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620D 19800 bytes
SHA-256: ccc1ba29ebdd0044a7a53a91068c5781cd75e761b37975234713c3507782a06b

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