Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a5949db87186a3e…

MALICIOUS

PDF

43.5 KB Created: 2021-05-15 06:38:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f1d08e0f886375c39dac1f39e6e0975f SHA-1: c4ed110d1d0842cea62734c35d459e52fd82abc3 SHA-256: 7a5949db87186a3ebbc1a4d9b57576ef2e6d126377cd992d74ed408b67d005ad
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/make-robux-game-hack PDF link annotation
    • http://shahriyarclimb.com/images/coin-master-free-items_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/robux-boost_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-roblox-wings_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://shahriyarclimb.com/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://shahriyarclimb.com/images/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://shahriyarclimb.com/images/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/coin-master-daily-free-spins-link_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
stream_003_off00004628.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4628 28184 bytes
SHA-256: 6da1e4a4f2f5ebce12b47d55a7beeb3594aabb295142e57049f825ac1cb395ab
font_01_sfnt_off00008754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8754 18444 bytes
SHA-256: d485cf64ce85db08f49cebe049b1af1977bd392e7b632f71036820545e301f0d

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