Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c34ba1457a68ee…

MALICIOUS

PDF

49.9 KB Created: 2021-06-04 06:11:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1e5374ddd3b72bb591bba4804f3d45d8 SHA-1: bab848bd1cd7205323523548509ed7ee54226920 SHA-256: d0c34ba1457a68eed438e89ca94bf8c1c6b6d8c461dbc719c5137c2bfb857a91
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector. The embedded URL and document body text reinforce this lure. While no scripts were extracted, the PDF structure and heuristics suggest it's designed to trick users into visiting a malicious URL, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9751

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.online/app/406889139/stock-speed-coin-master-free-spins-game-hack PDF link annotation
    • http://library.ulb.ac.id//repository/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/hack-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/corn-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/pubg-uc-through-easypaisa_GM1330123889.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/what-tiktok-free-views-hack_GM835599320.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-client_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004ffc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FFC 24728 bytes
SHA-256: 08f656d39d5520c522e740797c71a9f4832813e26590ce34644b6ed255ac3397
font_01_sfnt_off000088bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88BB 4028 bytes
SHA-256: 6a4891da4f8b73c02e22ecd6fa566d6bb4f5f2d5575b30a343f3d3c5e0919267
font_02_sfnt_off0000965e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x965E 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off0000a04e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA04E 18228 bytes
SHA-256: 0912f0786cfda3eb3f4ec59ad0423aa1ca94e0fc281419103cd3a9ceac43c1d0

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