Malicious PDF — malware analysis report

Static analysis result for SHA-256 3350be18cf4ae277…

MALICIOUS

PDF

43.8 KB Created: 2021-05-13 13:00:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3a8aedfa2cbdbcff36dc0bea088d3ddf SHA-1: c0b867b1bc601adc2b8cc230b03d2ae09d6d3bc4 SHA-256: 3350be18cf4ae277cfbbc991e303e816a1666980497eb4797474edd105793371
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 0.9969

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/431946152/free-robux-hack-generator-game-hack PDF link annotation
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/free-robux-live_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/free-robux-easy-and-fast_GM431946152.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_003_off00004dc7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DC7 25032 bytes
SHA-256: 1e92dda7d1fb3e017c30a78e0fc5f85ae65b76ac54e245a3147133297f2e3439
font_01_sfnt_off0000880a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x880A 18516 bytes
SHA-256: ac45002ee2c78c55a094f6344a5e95abe10f4ed7f4298fc77d5376065a98214b

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