Malicious PDF — malware analysis report

Static analysis result for SHA-256 d472ea8e39a74b1b…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 22:26:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cf5e1d1b732a314c0592cfedf2da00b5 SHA-1: 318883b6dbd96ac45538aec4974bd5b44eead7be SHA-256: d472ea8e39a74b1b48b5916761fa105b579bf579bf2afb504abb6ef0cf43fbe0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a 'free generator' or 'game hack'. The primary malicious link directs to a known redirector infrastructure. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely to deliver a secondary payload or lead users to a credential harvesting site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/431946152/free-robux-today-game-hack In PDF document text
    • http://perpus.ar-rum.ac.id//repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/robux-win_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/weird-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/body-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.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
stream_004_off00004f7d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F7D 28312 bytes
SHA-256: e36e76b94e2f5fd98c5284490a3a3056fe3a2b4d632111aa7c5c0ab2e4dd68a1
font_01_sfnt_off00009040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9040 18596 bytes
SHA-256: 123b3c01001442c78a22a4b95c046930f1463c344676a890e106be4cc216f6f4

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