Malicious PDF — malware analysis report

Static analysis result for SHA-256 f126f4b4169b3bab…

MALICIOUS

PDF

33.1 KB Created: 2021-06-27 11:30:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6d5dfb25343abfd9d7e98c8370179b33 SHA-1: a0a8b22aaa75baef88634d1ec6a6b29e9c6693c8 SHA-256: f126f4b4169b3babbe94ae3d7e4dc925829c4a3f775ff2a60a9c560ea3756e20
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to a known malicious redirector infrastructure. The document body and heuristics indicate a lure for game hacks, specifically mentioning 'Roblox Build A Boat For Treasure Hacks'. The primary malicious URL identified is http://netcdn.co/app/431946152/roblox-build-a-boat-for-treasure-hacks-game-hack, which is likely used to deliver a second-stage payload or lead the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-build-a-boat-for-treasure-hacks-game-hack In PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/freerobux-co_GM431946152.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/village-coin_GM406889139.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/legit-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/why-tiktok-free-download_GM835599320.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/pokemon-go-free-play_GM1094591345.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/how-to-get-free-gampasses-in-roblox_GM431946152.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C76 21724 bytes
SHA-256: 65cc15853e144c2b3516c3d503c6dd530ea14740833b6a9b6f719013375ebe70
font_01_sfnt_off00005beb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BEB 19356 bytes
SHA-256: 42da5700836cc55db86022096fa8b2749a01cf76afff0fd675e0624272ffb963

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