Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bb2031bb0714ec5…

MALICIOUS

PDF

34.1 KB Created: 2021-07-07 09:12:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9ad32cc0be0f10200595d6bf6b866f83 SHA-1: 8daa60078d7a85933b1283997334684bee3ff558 SHA-256: 1bb2031bb0714ec5b762789c5a55eaa2209ac03a78e728342119e4ea3c96b313
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/minecraft-free-download-unblocked-game-hack PDF link annotation
    • http://www.opac.stieimalang.ac.id/repository/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/freetaco-roblox_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/hack-desert-treasure-quest-roblox_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/boombox-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/tiktok-free-mockup_GM835599320.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-hack-a-roblox-account-with-hashes_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-online-spins-coin-master_GM406889139.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_off00002ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECB 22220 bytes
SHA-256: de3b16cf0a5381b0a6a7b1a30215e7589e480a151f349b6731d400934c5292cd
font_01_sfnt_off00006010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6010 19092 bytes
SHA-256: b89de8ec978c760e16c728bf26098254cc88868f8675788ef266acc2a2d3d026

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