Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a3f95d92d05102…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 17:17:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ed440b233fa8d196564606eb7f11b693 SHA-1: b7b13df045a6b6665f4bca7d27bbe207fa3a6259 SHA-256: f2a3f95d92d05102d0d6a616e05df456bdd0b5189506e04ae990add32f8d930d
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/cheats-for-city-architect-roblox-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/roblox-credit-card-payment-download-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-execute-script-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-make-bc-no-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/robux-survey_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-to-join-anyone-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-chat-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/stylish-animation-pack-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/using-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/evidence-that-roblox-is-free-to-play_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-thanos-gauntlet-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/btools-script-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-cheat-new_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-roblox-gift-card_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
font_00_sfnt_off00002ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECB 21640 bytes
SHA-256: 21c6907db0062695a4d937de33ca84408aff573b0c9902221afbc1d45c668dec
font_01_sfnt_off00005e5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5C 19220 bytes
SHA-256: 681b798fc20d9a318e622cd65addb1ec3fd586d144d1f243b2dd5de43f502791

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