Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5c8f1759d7b3c5c…

MALICIOUS

PDF

42.0 KB Created: 2021-05-10 14:12:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 50e37a1adab293f65c2e4141d2347e90 SHA-1: d49caba0ae88412479e837f4ed33b594e038aa68 SHA-256: e5c8f1759d7b3c5c28752c3fb6d18e2bf5db7b85dda4fc1a8190e40b3fe91412
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'generators' for popular games. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of these links. While no scripts were explicitly extracted, the presence of embedded URLs and the lure of free in-game currency strongly suggest a phishing or social engineering attack aimed at tricking users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coinmasterfree-game-hack In PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/minecraft-login-free_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-online_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-free-robux-on-computer_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
stream_003_off00004a29.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A29 24812 bytes
SHA-256: a897c22aad3fd6a5418a48a035c35bd8b4d44711666bd8859f9310d05f1c5362
font_01_sfnt_off0000834f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834F 17808 bytes
SHA-256: ed5fdd5441acd06a3bb02758ac945137dbfa7be696a0962169bf0eb95ec74bb8

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