Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c11608d669bbcc2…

MALICIOUS

PDF

35.8 KB Created: 2021-07-08 22:50:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e34845bad345eee73239681f42936f16 SHA-1: 22a42c33fbaf6deec3a9c71b8a20b5b5ffb9aac3 SHA-256: 7c11608d669bbcc2e79ad33d68ae3a38fe222c6cfdbc993e8cbf272245e85a6d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure promising free items for the game Roblox, directing users to download a file from an external URL. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent to deliver a payload. No scripts were extracted, but the overall pattern suggests a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-get-free-hats-on-roblox-game-hack In PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/hack-roblox-ios_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/free-roblox-accounts-2021-february_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/hacks-for-jailbreak-beta-roblox_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/abstract-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/hilton-hotels-lua-c-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/free-robux-eith-no-verifications_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/roblox-people-girl_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/free-tiktok-accounts-with-2021-fans_GM835599320.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/roblox-free-pants_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/robux-card-hack-pastebin_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_off00003391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3391 22960 bytes
SHA-256: fa249419b91921ed11d0d1d84daf3de0a250fb3858ab31e49a003c46de171132
font_01_sfnt_off00006727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6727 18920 bytes
SHA-256: ed9cc6ddef7d1a444e8975af02753321d3e73dce2aace76f17ee3e5b5a163ad0

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