Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd5e0dcc5d8648c8…

MALICIOUS

PDF

35.7 KB Created: 2021-06-20 05:43:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 99ba8a202190cb79e5485cee2aff08a4 SHA-1: aa08c503b49c30502203343d34b86936edda45d4 SHA-256: bd5e0dcc5d8648c82d0e0940dae473e85be0b01a55450621dcff1efb7fab5d38
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.co/app/431946152/free-robux-no-survey-or-deals-game-hack PDF link annotation
    • http://perpus.polbitrada.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/is-it-ileagal-to-hack-on-a-game-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/roblox-free-items-glitch-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/collect-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/roblox-r-cheats-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-team-change-gui-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/cheat-engine-v3-roblox-download_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/best-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/robux-website-no-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/how-to-hack-roblox-account-2021_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_off00003295.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3295 22892 bytes
SHA-256: f7fbff987d167dc60b23be271ee93768b420d927c33a9fe4a47fa083c7d60f0e
font_01_sfnt_off00006609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6609 19252 bytes
SHA-256: e285abb034dfbd1fbdc9fa2cd07cbd23788170245f4b963b46d7dae0b38976d1

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