Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ccde2ac1068ed30…

MALICIOUS

PDF

47.1 KB Created: 2021-05-11 07:02:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 14b1aaf1e17d7a2de3e524138a47d128 SHA-1: eddb3531d94868f2f4c7e807cdf2a361ae299491 SHA-256: 2ccde2ac1068ed3031def1b241ba769047c899d8bed2fd836daa0c8b45a1d42c
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to websites offering game hacks and generators, with one primary link identified as a malicious redirector. The document body and heuristics indicate a lure for users to download or access potentially malicious content. No scripts were extracted, but the embedded URLs and the nature of the lures suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/coin-master-mod-free-download-game-hack In PDF document text
    • http://perpus.masda.ac.id/repository/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-gamepasses-on-roblox_GM431946152.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
stream_003_off000049d9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D9 24236 bytes
SHA-256: 3b2b67ddc96ed6c7da7be438a8f7d5e07a68eafd4bb0018f3c48a8cf61e463fd
font_01_sfnt_off0000812e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812E 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off000095b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B8 18292 bytes
SHA-256: df3d00f786f79046a7b02f352eafccbddd11185eddbe203132848a1a76bb74a4

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