Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd1e1c1decb9ceff…

MALICIOUS

PDF

44.0 KB Created: 2021-05-12 13:33:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: aa21ce8c9d8e01bcbd566602f55741a7 SHA-1: 8825e1651d8a9219cd7157957b3c9f7ebb051bc0 SHA-256: bd1e1c1decb9ceffe43b4b519eec75dc749f720b9f14563a03d3e1743ea47216
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent lure for game hacks, indicating a phishing or scam attempt. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly suggests the document's purpose is to redirect users to potentially malicious sites offering cheats or generators. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lure point towards a social engineering attack designed to trick users into visiting compromised or malicious web pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-spin-link-for-coin-master-haktuts-game-hack PDF link annotation
    • http://library.umuslim.ac.id/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-online-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-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_off000049dc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49DC 23752 bytes
SHA-256: 185466ba69641b180fe0dbaf5075b43fb32ea357e9711524b1a508bc350006af
font_01_sfnt_off00007fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC4 2868 bytes
SHA-256: d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
font_02_sfnt_off000089af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89AF 18196 bytes
SHA-256: 059040c70b7e1623cc802a78fc9a4c62b0b07acde00f6a5c29b37c3e020e38f1

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