Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9afb8c3ee05996b…

MALICIOUS

PDF

33.1 KB Created: 2021-07-08 06:01:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 975d5c07e5dd66d39522d6d803ae1c93 SHA-1: 3b5abf78d07408e0940e2d05695a6ac3b77685a1 SHA-256: f9afb8c3ee05996b5034073a247ff8bffe4b93773d21d1964257b2e51a24af7c
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/roblox-free-robux-com-game-hack PDF link annotation
    • http://library.umuslim.ac.id//repository/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-online-hack-for-free-robux-and-builders-club_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/hacker-hair-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-gear-hack_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/hacks-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/hacks-for-roblox-2021-admin-hacks-dowload_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-hack-robux-on-windows_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-robux-hack-no-survey-mac_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-make-your-own-roblox-hack-injector_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-roblox-gift-card-youtube_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_off00002d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D4A 21572 bytes
SHA-256: fcd2e7d924924a836f6bfa6a0821fa87c575bf2f8dafdb8103d10e7d9ffc9163
font_01_sfnt_off00005c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C75 19052 bytes
SHA-256: 3ade0644b03576c953d7fa07027ec2051297089046835a88cadcb08e5c593426

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