Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e3f882c3063bd7c…

MALICIOUS

PDF

33.6 KB Created: 2021-07-03 16:56:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3818cacadf4f16b7c4b9b25ffd3cd210 SHA-1: 573c72b25d214c3b404bb65287692da7e0eded74 SHA-256: 5e3f882c3063bd7cf18a7b5ba1046d95f986681e9d4a7cd3d3150f264fe6c810
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/hacks-para-roblox-2021-banear-robux-infinitos-game-hack PDF link annotation
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/roblox-pet-simolator-hack_GM431946152.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-robux-codes-october-2021_GM431946152.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/money-hack-for-roblox-vehicle-simulator_GM431946152.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/lazyblox-com-free-robux-ad_GM431946152.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-robux-codes-to-type-in-chat_GM431946152.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/minecraft-114-download_GM479516143.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-robux-august-16-2021_GM431946152.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/minecraft-svg-free_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_off00002cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDB 22104 bytes
SHA-256: 86c944850ce652bccb4b7c652408dcad3c846d0a29a88a1fa0054b71d4414877
font_01_sfnt_off00005dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAC 19392 bytes
SHA-256: e0a10eb5c79fd7677681f75ffe64e9ded52a0b72f4bfc8694f392d0bea047a53

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