Malicious PDF — malware analysis report

Static analysis result for SHA-256 9663656718b34279…

MALICIOUS

PDF

41.8 KB Created: 2021-05-16 07:41:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ad15ceafc37f08b3ec57679288f891fc SHA-1: e70a8285559a64f8e8ab866887ce9c4cf4a02676 SHA-256: 9663656718b342795c88a7d623ab446e2cfeda431290894ed6e1a27d64812d7b
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9971

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.xyz/app/431946152/free-robux-on-iphone-game-hack PDF link annotation
    • http://techmobil.pl/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-hack-roblox_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_off000045f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45F1 25388 bytes
SHA-256: 5bc822708865c0dd2f38f9a7ddede68ff8948801ce4704de141c9608016e93e9
font_01_sfnt_off000080e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E4 18356 bytes
SHA-256: 09002ce3ba94cfa5154e24d4605185e25e9b5ae3e76d565aeacf431b5bbbf1e5

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