Malicious PDF — malware analysis report

Static analysis result for SHA-256 adf8ab6fe533ff63…

MALICIOUS

PDF

35.0 KB Created: 2021-07-02 05:12:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6bb0a021d9dbf9528998bed716a02681 SHA-1: a3cf78d32f389650b4342e12291bf9174d967695 SHA-256: adf8ab6fe533ff635c06a36e7c6a227912d9cd1f9c7b938c65ca65cf716a9dec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising free game hacks and generators. The primary malicious link identified is http://netcdn.co/app/431946152/password-cracker-roblox-download-free-game-hack. This lure is designed to entice users into downloading potentially harmful content or visiting further compromised sites. 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/password-cracker-roblox-download-free-game-hack In PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/freerobux-co_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/minecraft-items_GM479516143.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/mcpe-download_GM479516143.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/roblox-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/minecraft-free-version_GM479516143.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/www-roblox-cheat-us_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/abd-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/master-coin-hack-app_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/minecraft-free-download-mac-full-version_GM479516143.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_off000030e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E6 22248 bytes
SHA-256: caab68b05766b62d509fee61c6935ebcde562c412e3bbaf15c16d9fbf0b2ea58
font_01_sfnt_off0000629e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629E 19480 bytes
SHA-256: f9e692bbb4d7ca64484a9749e0527023c81442a58b9e55d8bfff8da6835d53f8

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