Malicious PDF — malware analysis report

Static analysis result for SHA-256 74f47a8d84e9c059…

MALICIOUS

PDF

34.7 KB Created: 2021-06-19 01:53:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f0a9e51db68177baa16862f28f78f98b SHA-1: acbf37f3a4a6973db5be00f837d902988a5032fb SHA-256: 74f47a8d84e9c059e82e40d0bcad73a645256757b6e9571cb074d33a917e055c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded links and text referencing 'Roblox Robux Hack' and similar game-related lures. One primary URL, http://netcdn.co/app/431946152/roblox-robux-hack-for-mac-game-hack, is identified as a malicious redirector. This suggests the document's purpose is to trick users into visiting this malicious site, likely for further malware delivery or phishing.

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/roblox-robux-hack-for-mac-game-hack In PDF document text
    • https://repository.stikesindramayu.ac.id/repository/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-how-to-cheat-on-obstacle-paradise_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/shooting-roblox-free-too-play-on-line_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/get-free-account-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-free-robux-in-a-game-in-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/seraph-hack-roblox-download_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-free-tiktok-followers-without-downloading-apps_GM835599320.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-hack-gui-download-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-gamepasses-roblox-2021_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/make-free-robux_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_off0000313c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313C 22320 bytes
SHA-256: dbbf800fb63eadbbbc469d3c0a3dc4505e4b6bbff36779bea21abd7b240e735e
font_01_sfnt_off00006288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6288 19156 bytes
SHA-256: b120f63d17a37fc3fb134e9cfde96ddc9cdcc9fe7ae7bf09090a4aa859bb102a

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