Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ca709b93d44b63e…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 05:20:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b1f0357b2e0a4cbd9acef77218085017 SHA-1: 15f9343e798a6f0e47b831bdb09bab623dabb85d SHA-256: 3ca709b93d44b63e0ae809011b57a0768a699d98a4c7071265287a8c66d81f3d
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/freespinandcoinblogspot-com-2021-11-coinmasterfreespins-game-hack PDF link annotation
    • http://mbbs.hr/files/free-roblox-pictures_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/free-roblox-accounts-with-good-quirks_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-roblox-money-2021_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-account-for-roblox-infinite-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/roblox-execute-script-hack_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/download-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-glitches-and-cheats-for-lumber-tycoon2_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFE 22944 bytes
SHA-256: 595ec103cddc1f00c0018d573c4e192bd6be837e34b95d5e286afef8ab38a2b7
font_01_sfnt_off000061bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BD 19240 bytes
SHA-256: 4d79388b77b70e51239d224782561472d5aaa6f564ac5e1b9a8e71f2b8352f5e

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