Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f0e5ff44151965c…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 23:45:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ddf0c738c1416ff347e6e1105017ef73 SHA-1: 10508a0d263b54cca5eb7236beef1d18e195a7c9 SHA-256: 1f0e5ff44151965ca463e43985c312fc9bb4a27e40b20ebb42fd18bc83811c49
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 0.9980

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.tw/app/406889139/games-like-coin-master-for-free-game-hack PDF link annotation
    • http://smpn1sda.sch.id/slims/repository/free-roblox-accounts-discord_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-retro-craftwars-hack_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/adidas-t-shirt-for-roblox-free_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-hack-downald-lvl-dragon-ball-final-stand-roblox_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/getrobux-come_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/poke-preston-roblox-hack_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-ninja-legends-hack-download_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-open-a-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-wings-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-hack-ga_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_off00003119.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3119 22520 bytes
SHA-256: 3ecce8d874c7684663841f41e6fec8e4d0cecf1e7ad91acf32a4eef024760ccc
font_01_sfnt_off0000635b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635B 18428 bytes
SHA-256: 7b60c1294d997f04f61e5608f4fda5ea7312313d385ffeed54d843e5d07233f5

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