Malicious PDF — malware analysis report

Static analysis result for SHA-256 f00fcede9b5d79d6…

MALICIOUS

PDF

40.3 KB Created: 2021-05-10 18:54:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f813199189956b5a0f565efcbe3c9eec SHA-1: 8c36a6058f28aa391f56a4874dffbba0869581e6 SHA-256: f00fcede9b5d79d64863effe63e775e01ef30d074d606aa4a788181e8f143bcc
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 0.9971

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/free-coin-master-app-game-hack PDF link annotation
    • http://smkn1salatiga.sch.id/library/repository/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-hack-https-coinms-net_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_off0000448c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x448C 24316 bytes
SHA-256: 4c04564984bc55b5e481ddc6f1a4d47e461ac07fe0e58650f26ee15ba88c5f11
font_01_sfnt_off00007c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C18 17884 bytes
SHA-256: c91e1147911e8cb6a9d887c860ea45f4a2f31ad94033e64533e9785798adbab1

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