Malicious PDF — malware analysis report

Static analysis result for SHA-256 527ea504ba724340…

MALICIOUS

PDF

44.5 KB Created: 2021-06-10 20:40:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a136ebf0055d50362034d121140dd890 SHA-1: 88165133ecef9cc0535880db5500c6286ff939f6 SHA-256: 527ea504ba72434054dd115f4c8601e394b3eeeb836f005e873e5a959cb3ba34
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 0.9865

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 https://netcdn.tw/app/431946152/how-to-make-items-free-in-roblox-game-hack PDF link annotation
    • http://zarinnameh.ir/images/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-game-download-free_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-vip-door-hack_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-money-for-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-game-glicth_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/try-minecraft-free_GM479516143.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_off0000510b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x510B 24492 bytes
SHA-256: 63abe4afe0f9c9ee374e4c17ddd4b05336d9f500d7f1ce68af6531378c27e023
font_01_sfnt_off00008922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8922 19068 bytes
SHA-256: 1ce994788d69167cf599956cf2a174a504163c69fdae385250cd4c3ba1702fac

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