Malicious PDF — malware analysis report

Static analysis result for SHA-256 f95eb1e094bb1061…

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 23:39:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 8ea3379bcd0fa8f4e370824c05ae4674 SHA-1: 5fa9334de289110c45e2da42b2a4b8b5971ae444 SHA-256: f95eb1e094bb1061f9b825e14b25cf3c82387f11394e6decab88081864fbee22
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/406889139/free-rare-cards-for-coin-master-game-hack PDF link annotation
    • http://studio-dentistico-fiume.com/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/nonsense-diamond-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/free-alts-roblox_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/roblox-lv6-free-trial_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/free-roblox-account-with-all-elements-on-elemental-battlegrounds_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/actual-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/free-robux-no-download-no-survey-trackid-sp006_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/roblox-meep-city-game-free-download_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/i-got-hacked-playing-roblox-in-real-life_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/free-robux-guuudd-info_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/get-free-robux_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/how-to-hack-any-game-on-roblox-2021_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_off00002fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE0 22244 bytes
SHA-256: fd332657a784ec7281e407fa787bc835741f3bffe02293d2a1c8a1a4fa4d21d5
font_01_sfnt_off00006161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6161 18172 bytes
SHA-256: f26c4cc90aa30d03f9af784062541b005981ee6f19e4aad4ceca08ceeafd240a