Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c4dfda16ac7b562…

MALICIOUS

PDF

35.1 KB Created: 2021-06-26 12:42:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2425a2a9015e17d5eedeaf1414b48c25 SHA-1: 1d837fcc9dcf5b0ee96c03a618014d2abab403e7 SHA-256: 3c4dfda16ac7b562d0b0540d2e90bb372daee2c90343e574bd64a5b4e4c5195f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs that lead to a known malicious redirector, masquerading as a game hack or generator. The document body and heuristics indicate a lure for free game currency (Robux, Coin Master spins), which is a common social engineering tactic. The presence of embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt, likely delivered as an attachment.

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/how-to-get-free-money-on-roblox-high-school-game-hack In PDF document text
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/http-get-free-robux-eu5-net_GM431946152.pdfIn PDF document text
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/free-robux-how-to-february-2021_GM431946152.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-com_GM406889139.pdfIn PDF document text
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/roblox-18_GM431946152.pdfIn PDF document text
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/new-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/rc7-for-mac-roblox-free_GM431946152.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/robux-com-free_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_off00003161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3161 22248 bytes
SHA-256: 2f81466d64853b5a2b840a181f451a8851d6245ac7921c8ea96f01fd6eb33965
font_01_sfnt_off000062cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CD 19580 bytes
SHA-256: 7a8cf617683700b9d25a1a01eb4fba74e7e4d7cf0bde9349e7068c4f77b54897

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