Malicious PDF — malware analysis report

Static analysis result for SHA-256 081104cefec5bc04…

MALICIOUS

PDF

34.7 KB Created: 2021-07-08 08:20:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a8a292619667167da82ea332c61a96bb SHA-1: 69d2a8a8735506ca6dd09eabcef1a4225bd29529 SHA-256: 081104cefec5bc04b274628053272cc52c81fa6e1ebc1f57fa93df4d9745af25
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link that acts as a lure for a 'game hack generator', redirecting to a known malicious infrastructure. The ML classifier also flagged this PDF with high confidence. The embedded URL is designed to trick users into visiting a site that likely hosts further malicious content or exploits.

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/406889139/coin-master-free-link-2021-game-hack In PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/instantrobux_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/how-to-get-free-robux-on-places-roblox_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/how-to-upload-audio-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/new-roblox-items-free_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/free-roblox-cards-no-survey-no-download_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/wheel-decide-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/free-robux-sca_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/free-robux-now-2021_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/cheat-mod-on-lumber-tycoon-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/free-robux-generator-without-human-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_off00003172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3172 22584 bytes
SHA-256: dc6f2e3509421fe9be8aab13c8d7ba5a4d16b06b9e9ae308f8816f840aa39538
font_01_sfnt_off000063e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E2 18568 bytes
SHA-256: 5c6f2b8c8950227f34c0c7c762a0319831c5dcbb819f0110f1dbfe9ff8d1e338

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