Malicious PDF — malware analysis report

Static analysis result for SHA-256 3602af55294012fe…

MALICIOUS

PDF

46.6 KB Created: 2021-06-11 12:54:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 5239d032e9e544d297cc12bef4dda5b8 SHA-1: 08a1f768d6927d35699f313f701f231d3be78c47 SHA-256: 3602af55294012feb4bf8fad7014145edbd8b61c42ce1658d9151fdea58b5995
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings indicate that these links are known malicious redirectors and are part of a lure for game-related exploits. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lead the user to a malicious download or exploit site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/roblox-x-ray-hack-autohotkey-download-game-hack In PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-strategy_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-key-free-spin_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_off0000553d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x553D 25600 bytes
SHA-256: a3c8f80b0d91d80048cbedd76a8ece3efa5b46479f930bd4fe107884295ec162
font_01_sfnt_off000090ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90AE 19276 bytes
SHA-256: 9d4e0186f6f7cd5b76918829163489a77c7d1dff6ce3a0ec41fe46504d8829c4

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