Malicious PDF — malware analysis report

Static analysis result for SHA-256 1705fc6ed5920ee0…

MALICIOUS

PDF

45.9 KB Created: 2021-06-09 11:24:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d453deb0e17f0c8b6647045f31f61806 SHA-1: bc0ea597f981eb4d3a60516937795b24232bb64f SHA-256: 1705fc6ed5920ee0d9ad9c08e102d67a61d45dc768306b149fda12c77e79642d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links disguised as game hacks and free currency generators, with a primary URL pointing to a suspicious domain. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs suggests a lure to a malicious website. No scripts were extracted, but the document's structure and embedded links indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/accounts-for-roblox-free-and-nothing-on-them-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-official-page_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-with-inspect-element-no-blogspot_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/get-free-spins-on-coin-master-links_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-hack_GM431946152.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_004_off00005309.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5309 26828 bytes
SHA-256: 3ada3063b737e5be7a6d8e5cbfcd4c225766c1112984ef76ea4efa45a7232dd6
font_01_sfnt_off00008e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E72 19200 bytes
SHA-256: 7e9de3ab9d35fa20226ba9268728a7e30c239d73b1e760e2800ec13d501485d7

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