Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee135a1512fe7b0…

MALICIOUS

PDF

48.7 KB Created: 2021-06-13 21:28:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: eca6040ec5f747e2ffad37a033d06455 SHA-1: a46a6291ea6671345550a9179d627ca364aab73d SHA-256: 7ee135a1512fe7b0c796199f0c444ab15759d7ecb41f2ffaa461f692e70a348e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising "free generator / game hack" content. The embedded URL http://netcdn.co/app/431946152/guuud-info-roblox-free-robux-game-hack is a strong indicator of a lure designed to lead users to malicious sites. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/guuud-info-roblox-free-robux-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/robux-generator_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-building-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/where-to-get-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/synapse-roblox-free_GM431946152.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_003_off00004afd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AFD 29356 bytes
SHA-256: 3301ba6e0ab3185317d046c640310e367174d30b54c53ba9806ec10641a6b5c1
font_01_sfnt_off00008e62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E62 4104 bytes
SHA-256: c818029324fc823d8cd4f2d4fbe5a54e5e8cb5f158ed90647965a3c64a318909
font_02_sfnt_off00009c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C35 18260 bytes
SHA-256: 063109c0e07a0e5d28914fa2e96383f4ccb81956bda4de4fbaefadcedccd9d36

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