Malicious PDF — malware analysis report

Static analysis result for SHA-256 75652e4191a5c2ea…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 10:56:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 58e47c59e41e3d0ce37daf3f755dfc1d SHA-1: b2f29c30ad975197969c9a8093d9cb6f64e13eb9 SHA-256: 75652e4191a5c2ea60d44b8c36b46f1acfa78160892e7347dba6d7aa39c72020
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/406889139/coin-master-2021-free-spins-link-2021-game-hack PDF link annotation
    • http://e-library.dharmawangsa.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/roblox-executor-free_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/can-i-change-back-to-old-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/hack-mod-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
stream_002_off000032f6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32F6 22760 bytes
SHA-256: b2c696e1c490ccaa1505c674e38ba04b8e477d07e1f6ac0c0a7f59e0548ec3bb
font_01_sfnt_off000065b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B6 18748 bytes
SHA-256: e86d1d7b2a315a4589de0526ea833c85a652b2f2cf198d952b17ceb10db4042d

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