Malicious PDF — malware analysis report

Static analysis result for SHA-256 448c7c445976152e…

MALICIOUS

PDF

46.1 KB Created: 2021-06-11 02:51:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f16072da3fbd052e67382acdac8e03df SHA-1: f357365256a34d9bd9224bd3d9216b26ad27f2a2 SHA-256: 448c7c445976152ed154e78f0f31c64ff03adbf2bf5a3551ab25506e88418abf
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 0.9864

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.tw/app/431946152/how-yo-get-more-money-on-roblox-cheat-game-hack PDF link annotation
    • https://fib.ub.ac.id/sac//repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/easy-points-gg_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-roblox-groups_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coinmaster-links_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/can-you-actually-get-free-robux_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
stream_004_off00005533.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5533 25364 bytes
SHA-256: 0afd6623d3d5725b61bdedc99241128ecc8076e57298de7a2c34e360b55b8578
font_01_sfnt_off00008fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA9 18984 bytes
SHA-256: e27f53b45c924fcc7cd84837b571632267f1eb45c00378f1ca52dc417226c11c

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