Malicious PDF — malware analysis report

Static analysis result for SHA-256 548e302d5a09bb79…

MALICIOUS

PDF

47.7 KB Created: 2021-05-11 03:42:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7a10f08922f66d57fcba0eddd9757224 SHA-1: e2120e53526ef1f583835f12095d18d886ca3434 SHA-256: 548e302d5a09bb7911c26fdd7ec0eb213dffa7776900db7ff3d67a692de7e68c
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 0.9013

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/can-i-get-robux-for-free-game-hack PDF link annotation
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/real-roblox_GM431946152.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://xn-----clcdhzcbmgnochhb1boe1a6b.xn--p1ai/images/free-roblox-hack_GM431946152.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_off00004ba0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BA0 29760 bytes
SHA-256: 7e1ac44dec37bae21581558c805f27311d2a17b1f8050140484cb4a2ca48a2e9
font_01_sfnt_off00008e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E51 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9803 18344 bytes
SHA-256: 56a64ad9af2fab004080c55c49ec35472f3c2134e95e40197be892b268dd39d5

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