Malicious PDF — malware analysis report

Static analysis result for SHA-256 198738e3549cfa96…

MALICIOUS

PDF

35.8 KB Created: 2021-07-04 00:15:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f22afb61739efcb6226954e96829350b SHA-1: efa32a8bd0581a22d750a74eb9a2eea2a0834a98 SHA-256: 198738e3549cfa967084126214017dedc1a403e0ecf253bd5a9efe9df1b1d0fa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to http://netcdn.tw/app/479516143/how-to-hack-a-minecraft-server-game-hack, which is flagged as a malicious redirector. The document body and heuristics suggest a lure for game hacks or generators, indicating a social engineering tactic to trick users into visiting malicious sites. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

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.tw/app/479516143/how-to-hack-a-minecraft-server-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-a-shoulder-pet-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-make-an-aimbot-hack-in-roblox-phantom-forces_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/pokemon-go-free-download-version_GM1094591345.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-money-cheat-engine_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-jailbreak-hack-keycard-youtube_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-in-games-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-robux-for-free-no-scam_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/como-ponerse-hack-en-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-anarchy-server-no-hacks_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/all-free-roblox-2021-accessories_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-clothes-on-roblox-no-bc_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/download-roblox-for-blackberry-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-what-is-e-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-electric-state-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-roblox-to-get-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_off0000357e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x357E 22832 bytes
SHA-256: 68b78580cd882d6c8bdde200c2d0fc0d4aa6f8ceaafc1a51019c959f91954155
font_01_sfnt_off000068b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B2 18448 bytes
SHA-256: f1c94bc02981aac760cf80effac2d7fab2917855e343fbf4fd70c93d36576a9e

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