Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cdfcd6cf5e3de6a…

MALICIOUS

PDF

44.2 KB Created: 2021-06-11 09:30:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a6f174045e25940b864c176794da5ac5 SHA-1: b93335cabe708c4b5d927cfd7ef7729cf83371d1 SHA-256: 5cdfcd6cf5e3de6aef00104ed470876e5d4d4614084c99ff19dba88ac8bad64f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The primary redirect URL is https://netcdn.tw/app/431946152/roblox-minion-game-hacked-game-hack. This indicates a social engineering lure designed to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of multiple malicious links and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/roblox-minion-game-hacked-game-hack In PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/roblox-hacked-game-database_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/how-do-u-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/robux-link_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/roblox-prison-life-hacks-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/robux-place-rewards_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/roblox-earn_GM431946152.pdfIn PDF document text
    • https://robuxhaxs.comIn 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_off00004fa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA1 24572 bytes
SHA-256: 3635e9eedaebfba9f74c25e0467a553afee1ea9e9ddcd6522be54d4f3bf7ff22
font_01_sfnt_off00008816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8816 18932 bytes
SHA-256: 440f7289ea735c0dccb573cbffcd99557ef69a5213eacfdac033a303c03ecd5b

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