Malicious PDF — malware analysis report

Static analysis result for SHA-256 324de15981dd9fb8…

MALICIOUS

PDF

42.2 KB Created: 2021-05-15 23:47:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 89acb2a649d92c62b865ac07bf3c03f3 SHA-1: 0845036bfd21811d923f702edeff0a111b44986d SHA-256: 324de15981dd9fb8fb3413cb601f3f882b183e4875aa8f52aef6d45fb37a08ba
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/431946152/free-vip-server-roblox-game-hack PDF link annotation
    • https://library.stikesmi.ac.id/repository/how-do-u-get-robux_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/roblox-hack-app_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_003_off000047ad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47AD 25448 bytes
SHA-256: dd7615a37249b85c6b3d9d1275bb22392733008a2d2da90c7d539a5594647e18
font_01_sfnt_off0000820c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x820C 18492 bytes
SHA-256: c1771e38e47f70d4d1a65a36e251d19cfd5d8120c02d48444b4cec837a0f1c39

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