Malicious PDF — malware analysis report

Static analysis result for SHA-256 9315a92c168a8fd8…

MALICIOUS

PDF

33.4 KB Created: 2021-06-19 15:35:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 27290832d651f4d3e844b988f5375770 SHA-1: 162c1664b9d720e0d407cfc80112a1a4401b9384 SHA-256: 9315a92c168a8fd81c7cdfdd06c0d799da44f5bf4cc3d230623dbdbc88d6d3d5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs that lead to a known malicious redirector, disguised as a lure for game hacks and free currency. The document body and heuristics indicate a phishing attempt to trick users into visiting malicious infrastructure. No scripts were extracted from this sample, but the overall pattern suggests a phishing lure designed to lead users to a malicious site.

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/how-to-equip-knife-roblox-hack-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/glitch-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/medieval-hood-of-mystery-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-hack-de-inspeccionar_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/robux-miner_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/hack-para-jailbreak-roblox-dinero-infinito_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/arsenal-hacks-roblox_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_off00002aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAE 22448 bytes
SHA-256: 428c7a4204907d921ae017831806d24c8552b83de1fb2a1753b80fc3957676e8
font_01_sfnt_off00005c66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C66 19424 bytes
SHA-256: 30debde5cc6c0482a503a8f3d9a09af8726392ff2177db8ff5c1bc029957418c

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