Malicious PDF — malware analysis report

Static analysis result for SHA-256 941312dcd955f350…

MALICIOUS

PDF

50.3 KB Created: 2021-06-09 14:34:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 44f028ab97418745fcfd2196a9cbbb5d SHA-1: 46bec96981ca39c348d8ea7785dadaf2fed5fef4 SHA-256: 941312dcd955f35078e45ba437571c437d3d13ade499059db3214d4e825444f1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a prominent link disguised as a 'free generator / game hack' lure, which redirects to known malicious infrastructure. The document body, though partially corrupted, contains similar URLs and text suggesting a scam. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/free-roblox-card-pin-game-hack In PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/comant-avoir-le-shop-de-roblox-free_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-hack-8-ball-pool_GM406889139.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_off00004ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FFC 29588 bytes
SHA-256: 7b39e08047e80b895913e70fac023a119636428d2e4a34401e968dabb7f5e708
font_01_sfnt_off00009494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9494 3608 bytes
SHA-256: 608f0dd4f6bfb6adbccec84228618ee8e4c9e09226d7330efb5300e499d1567f
font_02_sfnt_off0000a11c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA11C 18624 bytes
SHA-256: 1b397cfda7c421f4dfc3274a08292c6d315084fda7d0e296d51c1e5eeda63b4e

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