Malicious PDF — malware analysis report

Static analysis result for SHA-256 042c0f54978f8691…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 02:49:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fa83b067cfd7c742d6531901d40b7e51 SHA-1: 883fa2e87c9c13eb930bd99f9f1da4a2219b7aa6 SHA-256: 042c0f54978f8691dca1894840ed5c88369431e438c90b9d1605af3f427dc6e2
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/431946152/how-do-you-hack-roblox-game-hack PDF link annotation
    • https://fib.ub.ac.id/sac/repository/pc-roblox-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-2021-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/promo-code-roblox-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/pubg-uc-free-in-pakistan_GM1330123889.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-pokemon-go-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-two-player-military-simulator-tycoon-money-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-roblox-codes-for-robux-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hack-into-people-roblox-account-pastebin_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/robux-script-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/cool-pants-roblox-free-catalog_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-adder_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-download-roblox-hack-apk_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_off000030fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FA 22728 bytes
SHA-256: dd3be1c824d6b3c28b3325664547730205243a834a6709c727a0a8e2cf6c757c
font_01_sfnt_off000063ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BA 19292 bytes
SHA-256: 9995eaa591a4ae7360538d13bc69f9b48a4c6000d4d0fc373ba7f602d67ad74d

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