Malicious PDF — malware analysis report

Static analysis result for SHA-256 329ee8416c68efe2…

MALICIOUS

PDF

34.9 KB Created: 2021-06-26 09:01:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6f3601d7bc489d14d6b22551889b854c SHA-1: f75b24025c2196c4812f4c5492e224a93ba158b9 SHA-256: 329ee8416c68efe2b06afefab4478a27fe38cf489db5cc0996edf11b8a015f64
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, 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 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.co/app/431946152/robux-hack-inspect-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/i-think-ive-been-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-wait-to-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/earn-your-free-rank-roblox-meme_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-money-glich-cheat-in-theme-park-tycoon-2_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-robux-hack-generator-download_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-admin-roblox-how-to-turn-itto-others_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-close-snippet-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-free-games-guest_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-hack-no-survey-no-password_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hacking-laurenzs-account-in-roblox-yammy_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_off00003162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3162 22472 bytes
SHA-256: 8b70d176962bc606a838f84e79096cd16b8298bc5a99689e9fc4275236ecdab5
font_01_sfnt_off0000635a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635A 19004 bytes
SHA-256: 0f2c9f071c69526c30e9747fb34bc3c2a08874e5d889891776947f51460e3167

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