Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a5a167239711ee8…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 12:12:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3fe6a5484c2262ddcc9e8b12123eb5ef SHA-1: 6b7597f9061c86d7e488a594b057bfd6b565c07b SHA-256: 6a5a167239711ee8c65bd39a8a23df629b06468e68a3963004097694e7fd3902
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with one prominently featured in the document body and flagged by heuristics as a malicious redirector lure. This URL leads to a 'free generator / game hack' page, a common social engineering tactic to trick users into visiting potentially harmful sites. The ML classifier also strongly indicated maliciousness.

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.tw/app/431946152/how-to-get-free-robux-without-human-verification-game-hack In PDF document text
    • http://lib.stiesultanagung.ac.id//repository/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/coin-master-mod-apk-hack_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/free-picture-of-roblox-stones_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/how-to-get-free-robux-ios-and-pc_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/did-roblox-remove-the-opportunity-to-sell-models-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/g-eazy-freid-rice-roblox-id_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/roblox-detecting-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/roblox-veil-free-download_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/how-to-hack-roblox-games_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_off000030dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DD 22392 bytes
SHA-256: 26c702c58fd42e115b1dd7ce775e8cb29fd64ba8117e3c17b31b94145930f0e5
font_01_sfnt_off000062c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C8 19860 bytes
SHA-256: 495fe8ab67ccc92980b130970b14ca59a4055a895de5252c8ccba287623abf67

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