Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f33a09db2e090e…

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 07:50:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 08b2a746282a7283a2b90ac0cc059729 SHA-1: afd47c2c3d856bbd416892028a9c104045d06269 SHA-256: 56f33a09db2e090e38208530e740f2f6f35ab14f61a3b633becaf47257168550
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 0.9769

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.online/app/479516143/wurst-hacks-game-hack PDF link annotation
    • http://library-fkip.uho.ac.id/repository/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/pokemon-go-free-7km-eggs-july-2021_GM1094591345.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/master-game_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/tiktok-free-iphone-12_GM835599320.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-free-daily-spins-link_GM406889139.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_004_off0000544a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x544A 25312 bytes
SHA-256: e733f3d1d01065aeb6109c30dd836f689283945157a118eba595500459d457a1
font_01_sfnt_off00008da5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA5 2820 bytes
SHA-256: e5f6ec650849eefe6bc6a1649c2875ce35328d23e4196945bba66cc43e5a49d4
font_02_sfnt_off00009744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9744 17956 bytes
SHA-256: 9f0c48accc672e3b293cec4fa00eabc714dc967d3d1629efde7216784fa0cb8d

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