Malicious PDF — malware analysis report

Static analysis result for SHA-256 02b7b808b18c244d…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 12:43:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 90974ee69397aa422e203baeb53bcf33 SHA-1: 3bb51cce689339d30819082072ed408cc2bda6f0 SHA-256: 02b7b808b18c244d4ff6ecd15b7da83dbd2c6c5417cd968d5907450df7b0e92e
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 0.9980

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/free-robux-no-human-verification-or-survey-2021-game-hack PDF link annotation
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/roblox-free-bc-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-roblox-characters_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/roblox-auto-rob-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/get-free-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/hackear-coin-master_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
font_00_sfnt_off000031f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F4 21804 bytes
SHA-256: 49e5fc64d5d18c10a174de0c0631e78a009854637cd1e56eb8ad96774959979b
font_01_sfnt_off00006208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6208 20028 bytes
SHA-256: a686843967d16d630a3d792aecd0df7810ef9440d33d67b3fe7886ce86e787de

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