Malicious PDF — malware analysis report

Static analysis result for SHA-256 65536d017bbfcc54…

MALICIOUS

PDF

54.5 KB Created: 2021-06-10 22:15:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7221e2efd765b7667c2be2e606e094c2 SHA-1: 733bc38ac821b36386eeb5c3b2ad3bd4bd5e9e19 SHA-256: 65536d017bbfcc543350988075362dfb20950f1d20b25271a5bdeb81e0d1567f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising 'free Robux' or 'game hacks'. The primary link directs to a known malicious redirector, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9636

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/paste-bin-free-robux-no-wait-game-hack In PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coins-master-hacks_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-app_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-a_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/www-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000520d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x520D 38472 bytes
SHA-256: 8c5c50d6ebfa31a8f708a4d1fd057e587a4cb96b9ce04672b7b6834183505110
font_01_sfnt_off0000a48b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA48B 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off0000b132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB132 18820 bytes
SHA-256: f87bdb2c3e7b23fe5c263f5ff9412b7ecb9af415afee7c39dfe56af840d5766a