Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb1cf1b263f90ac9…

MALICIOUS

PDF

34.2 KB Created: 2021-07-01 23:20:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e7def7f97fab37c7c8ca63662981a4d6 SHA-1: e9171922b0ad1ac3304ae7268906058ca29ad90c SHA-256: eb1cf1b263f90ac9452ba1ff107ea3aac3ff5143ff65e71bff134f21fc5638c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a known malicious redirector, disguised as a generator for game hacks and free currency. The ML classifier also flagged this PDF as malicious. The primary lure is a link to 'codes-for-free-knifes-assasin-roblox-game-hack'. No scripts were extracted, but the document structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/codes-for-free-knifes-assasin-roblox-game-hack In PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/roblox-how-to-get-animation-packs-free_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/free-red-hair-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/hacks-for-sailing-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/roblox-hack-2021-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/how-to-hack-any-roblox-account_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_off00002d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6C 23160 bytes
SHA-256: dd543d18d239a58b32e90ba30795741b319b50b76e4b15e27457f227b18147f2
font_01_sfnt_off00006159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6159 18944 bytes
SHA-256: 59ddd79b91de0d8e2d4b9573d8f8d40fe9de00c6b8f1768562764d42cfb6b6bc

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