Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea3a2c74c36de13…

MALICIOUS

PDF

45.7 KB Created: 2021-05-12 20:11:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 818a40bfd8e53b335aa2010a979165a7 SHA-1: ab1d57e78c31893f67d2c9dbffe994e6ed4836e1 SHA-256: bea3a2c74c36de130388956d2a79e60045f4010f63e2915d9770189caad5a64d
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 0.9432

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 https://netcdn.xyz/app/406889139/coin-master-hack-version-game-hack PDF link annotation
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/coin-master-hack-pro_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b52.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B52 25012 bytes
SHA-256: 96dda0d51e09734c20396f7b59ab90cd57d726f103057bc25675fdfaf48744e6
font_01_sfnt_off000084b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B4 3620 bytes
SHA-256: a7ffd47631dfdffd19913a7d019e14a4e4f6584a4e894343a0be0687632311e4
font_02_sfnt_off00009177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9177 17848 bytes
SHA-256: 2729ad92b050e6dc35a280ba208d99b8f0446e6618424513f217a7b9cdaff54a

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