Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e09c54cf04c3c21…

MALICIOUS

PDF

34.5 KB Created: 2021-06-28 00:35:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: f949faa9f2e27a5d602f1e7bf5dcf758 SHA-1: 57a2dbeb9db7ddbfc4d3135e396259ad1dbd63b7 SHA-256: 0e09c54cf04c3c2125d8ea257c6c8843ed7c290b60ed91204531f46e812dfb40
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to a known malicious redirector, disguised as a 'free generator / game hack' for Roblox. The document body and heuristics indicate a lure to trick users into visiting this malicious URL, likely to download further malware or engage in phishing. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.co/app/431946152/roblox-games-for-free-to-play-online-game-hack In PDF document text
    • http://perpus.ar-rum.ac.id//repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-face-roblox-girl_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/infinite-robux-cheat_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-get-free-robux-and-tickets-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-piano-the-fat-ratmonody-hack-delay_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-robux-codes-com_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/rixty-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-robux-generator-robux-tix-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-get-roblox-builders-club-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/youtube-have-to-get-free-robux_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_off00003002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3002 22180 bytes
SHA-256: ab8b46c5187b557d9f5fe7aff3f0586b7a13be62a0509ef4b8562afa0172933b
font_01_sfnt_off000060e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E1 19364 bytes
SHA-256: 64a83b1a32a9fae4ac4181170695e0c1d68c5ec4fe817b07e900efa9bc93159e

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