Malicious PDF — malware analysis report

Static analysis result for SHA-256 269f9d30751846b4…

MALICIOUS

PDF

35.8 KB Created: 2021-06-19 00:48:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 161251be559bea397bfdb16852754c97 SHA-1: 1456e8f0c7fd596b14c3d063f6251971dca36705 SHA-256: 269f9d30751846b49bcfbb71ec1fad0e6b98353d58df9587716ad20064e86bf5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body also contains the same URL, reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the primary attack pattern appears to be social engineering via a fake generator or hack link.

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.co/app/431946152/youtube-hack-roblox-accounts-game-hack PDF link annotation
    • http://opac.salatiga.go.id/slims7/repository/best-hacked-client_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/mcpe-client_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-client-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/pokemon-go-free-and-apple-watch_GM1094591345.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-long-hair-roblox-codes_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hack-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-hack-me_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_002_off000031f3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31F3 23428 bytes
SHA-256: 5e2447bec2e5622ce0885a1e1fe51a0deedee9883cbc909b719dcdc9a9ba6579
font_01_sfnt_off000066e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E1 19060 bytes
SHA-256: ad4077e017650d097e2af455b0c8a786be40ed645a79169051dc2724b325ffcf

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