Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d1d160bd946f22b…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 05:58:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: aac7458d4c8cf662b505b514ceb9975b SHA-1: d944fadef9f09a106f955c56b55eb251ace25b1e SHA-256: 1d1d160bd946f22ba82010055c3f0fa07682a78e986200a72eacdbed922fbebc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free currency, with one primary link identified as a malicious redirector. The document body and embedded URLs strongly suggest a lure to a phishing or malware distribution site. The presence of multiple redirector links indicates a deliberate attempt to lead the user to a malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/431946152/get-me-free-robux-game-hack In PDF document text
    • http://librarystkippgribl.com//repository/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/pokemon-go-free-things_GM1094591345.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/village-coin_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/pokemon-go-free-or-armored-mewtwo_GM1094591345.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/se-puede-hackear-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_004_off00004ed1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ED1 26368 bytes
SHA-256: 6b44ea65d43cc5d8dcc0febb87d0f1e0e24de9009498c607a8da38203a0e37a8
font_01_sfnt_off00008c6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6F 18312 bytes
SHA-256: e3f176f8735a7a9c211288ec5f3dfc0a25536bb398bd4870e4b297ba4f960079

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