Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fc50bab097ad93b…

MALICIOUS

PDF

40.2 KB Created: 2021-05-12 20:47:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 81a4a183d6f8ac0756d6f23c6c566e90 SHA-1: aadeeba0b4209394ddfc9598f8492ce2d1dfc119 SHA-256: 0fc50bab097ad93be16f2ea7edbecb579f45cae0b74963551484f90739532fb0
102 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 0.9971

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/406889139/coin-master-hacks-reddit-game-hack PDF link annotation
    • http://36.94.36.7/elib//repository/coin-master-hack-mod-apk_GM406889139.pdfPDF link annotation
    • http://36.94.36.7/elib//repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/optifine-pe_GM479516143.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/free-robux-hacks-no-verification_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_off000045bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45BC 23608 bytes
SHA-256: 1f09052efcad2501e0a3e5aa14c49a4ad379efc74606fa0b115648147bb4a3c1
font_01_sfnt_off00007b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B96 17888 bytes
SHA-256: 63a6a5d9916b9ee5af7207625cec6907b74dd50493b17e0c9eae8777c3cfd91e

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