Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97f0ccce95d6553…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 20:15:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 65cbe7c7e4bc828b521cfc15e2a1c54b SHA-1: 02269267be9d25beaf679d3b7d789cdb5b9ce2fe SHA-256: e97f0ccce95d6553caf671449e7f19235774d86d6a88c7883b64af0210c802e0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, which is designed to lure users into clicking on it under the guise of a "free generator / game hack". The presence of a visual download button further supports the deceptive nature of the document. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at redirecting users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-switch-free-game-hack In PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-place-roblox-download_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-assassin-knives-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-hack-site-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-fight-the-monsters-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/all-free-promo-codes-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/guess-the-emoji-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/natural-disaster-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/zephplayz-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/robux-game-com_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-on-pc-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/descargar-hack-unu-para-roblox_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
font_00_sfnt_off00003062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3062 22792 bytes
SHA-256: 57629d05b49414fbdf61a1bcfa901c7a5abdaa5a566b735a5bd6aae69285feda
font_01_sfnt_off0000636b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636B 18188 bytes
SHA-256: 53077b162e7351ef499bb4a85d84c34a8c12bd4c299e506798e4f89e59e8e857

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