Malicious PDF — malware analysis report

Static analysis result for SHA-256 0255c5ded01aa92e…

MALICIOUS

PDF

47.0 KB Created: 2021-06-14 00:41:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fc17f700ac9021eecfadb038a8eb0939 SHA-1: ada08a7ac8778e688660769e9e733f700e08b0a8 SHA-256: 0255c5ded01aa92e07e06f2c99f66a3eff810bd9f0946b5f8df0cc3ca4e73cac
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, that lure users to websites offering game hacks or generators. The primary malicious URL is http://netcdn.co/app/431946152/hack-para-shinobi-life-roblox-2021-game-hack. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites, likely leading to further malware downloads or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/hack-para-shinobi-life-roblox-2021-game-hack In PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/combo-with-free-hats-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-prison-break-cheats_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/btools-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-parking-in-back-id-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-hack-teleport-in-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-free-superhero-body_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/hack-lecteur-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-roblox-account-username-and-password-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-jailbreak-hack-injector_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/nonsense-diamond-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/minecraft-java-edition-free-download-for-android_GM479516143.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
font_00_sfnt_off00004848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4848 27000 bytes
SHA-256: 53c2f0a549cb3a68b81da6e1e77fc67b209e3e2453e27b61644ecafd088cc5aa
font_01_sfnt_off00008660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8660 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9308 19024 bytes
SHA-256: 264564c5e48797ceb8a94aba054742177061b3a0186c8d7ed877fee86c6582c3

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