Malicious PDF — malware analysis report

Static analysis result for SHA-256 2161f7bda92cb263…

MALICIOUS

PDF

34.7 KB Created: 2021-07-09 19:54:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 09de15d0d18b69730fc0f069600447b9 SHA-1: 8a1bbf67890ebe56769f3d23eaa5640ad66e68ce SHA-256: 2161f7bda92cb2637ae377029bc363bf5ca76ecbecc11325a6f0d96b19ef5813
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/835599320/how-to-get-free-coins-on-tiktok-game-hack PDF link annotation
    • http://www.valenciamaids.com/userfiles/files/roblox-surf-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-meme-stshirt-free_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-free-robux-2021-may_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/change-roblox-username-for-free-android_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-ban-people-on-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/identifty-fraud-roblox-maxe-1-cheat_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-make-a-t-shirt-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-does-roblox-know-if-you-are-hacking_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-do-u-get-free-robux_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_off000033da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33DA 22268 bytes
SHA-256: d167cdbf923643dbdd9201b82fe6cd5ec94a2c2fa6034b13a0307f4b0fec8a08
font_01_sfnt_off0000654c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654C 18136 bytes
SHA-256: bf11655cca82da849c82e8e8955b36e5514ca87a6dcd33f11d6881068a9db892

Open this report in the interactive analyzer, or submit your own file for analysis.