Malicious PDF — malware analysis report

Static analysis result for SHA-256 274541a066b9a7e9…

MALICIOUS

PDF

33.0 KB Created: 2021-07-20 14:52:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: f9d6a3e1ab74587adedff9097dc40b32 SHA-1: 749e23440633c178327b9f892630bb0795241d04 SHA-256: 274541a066b9a7e98395a9f414d8fd00c66f538ab53bfa065977d881e5bf924a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically a site offering a 'game hack' for Minecraft. The document body and embedded links suggest a lure to trick users into visiting potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/how-do-you-get-minecraft-for-free-game-hack In PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/free-minecraft-skins_GM479516143.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_off00002c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C75 22632 bytes
SHA-256: 9598ed5feae9c8576eecb659511311bd7356008b620d5bb9ed6d0f8e9796a705
font_01_sfnt_off00005f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F07 18344 bytes
SHA-256: 67167d5a85b4e79e1ce06ee0ca4bd8624b04b02f24f28de3bf15fdadfc91d29a

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