Malicious PDF — malware analysis report

Static analysis result for SHA-256 1977e77f999d3f3f…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 07:46:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9cf174e678b49a58ec4afb392d354d0d SHA-1: 786241cc467428858753620fd0c59c74e5eaf123 SHA-256: 1977e77f999d3f3fdf455a771a4d910dc36b99d3b0f934565685d8a9c391fb5a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs, with a primary focus on luring users with game hacks and free spins for popular games like Coin Master and Minecraft. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly suggests malicious intent, indicating that the linked URLs likely lead to phishing or malware distribution sites. No scripts were extracted, but the document's structure and embedded links point towards a social engineering attack.

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-100-spin-slot-game-hack PDF link annotation
    • http://library.stieyapan.ac.id//repository/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/black-adidas-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/daily-spin_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-model-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-september-2021_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_off00002f57.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F57 22708 bytes
SHA-256: 983a9351e94107033b84d1a3264e5ab2cb4bb0826a7b121d4b5550dcc49a1041
font_01_sfnt_off00006213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6213 18364 bytes
SHA-256: 88797bd407c711461b4daf793cee71082bf3bd1979785ca26b5cf25185c1003e

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