Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca857506e1a370af…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 07:40:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 636bd1ba5b5c4fc569e51b5337f3e970 SHA-1: abbdcb483e3644a8bff4fd986e666afdfdeb6290 SHA-256: ca857506e1a370af9049ef02205fa3f16807edf0c9e6f0b5bd08f161c57bb87b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free spins, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content, likely as part of a phishing or scam campaign.

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/406889139/2021-no-human-verification-hack-for-coin-master-game-hack PDF link annotation
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-tiktok-fans-without-verification_GM835599320.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-exploit-2021-no-virus_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/robux-sign_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-bear-mask-free-roblox_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-free-prizes_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-how-to-get-free-robux-no-hacks-2021_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/minecraft-toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-free-robux-hack_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_off00002f52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F52 22572 bytes
SHA-256: 821356cdac0d09534b17396b46bea4fdabe68b2a83dbdbd261695e8009cf2b7a
font_01_sfnt_off000061a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A4 19104 bytes
SHA-256: b99d8ce9978a67e1c1797b589c5e57fcc0f76920f06468f0d8e602f7f6af843c