Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dbb99a15cc2ad89…

MALICIOUS

PDF

34.5 KB Created: 2021-06-18 07:47:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e653dc2a997edf99f783a3d582e89f4c SHA-1: 0bad4c8e17c95eabdb789ea906b0035ed4a3a0da SHA-256: 5dbb99a15cc2ad8998e33672bf6058526c1ae0d2c4ad533af8df34ad6fd8b0c3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a malicious domain, masquerading as a game hack generator. The presence of multiple links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or scam attempt.

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.co/app/431946152/penguins-on-roblox-free-robux-hack-game-hack In PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/robux-premium_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/hack-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/easy-way-to-get-free-robux-works_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-can-i-get-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/wurst-client-download_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-goahead-london-roblox-buses_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_off00002f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F82 22500 bytes
SHA-256: 4da98e77f0effc615021b75556f324f6c49a9ac98bc5ca16c2d41bc4bc8461f2
font_01_sfnt_off00006174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6174 19236 bytes
SHA-256: 7c7b40b48515db76260cc0d65d24dddeff4454782905c621efb379f76891b129

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