Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ca0d520142550e…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 02:41:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 096acbf9f903fcc266f529ef24d0f199 SHA-1: 04ec7a9b6a57c8156f546ea16eec16cc609e4702 SHA-256: 30ca0d520142550e91c58663ea2de7701f7ac3aa57096fca7e26c62fd7217197
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs, with a primary link pointing to known malicious redirector infrastructure. The document body and heuristics indicate a lure for 'free generator / game hack' content, designed to trick users into visiting the malicious URL. The ML classifier strongly supports the malicious nature of this PDF.

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/431946152/how-to-get-robux-for-free-2021-game-hack In PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-android-hack_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-bobux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/mobi-hack-robux-hack_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-onroblox-and-pastebin_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-hack-and-get-so-much-money-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/give-away-game-in-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/freemobile-360info-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/cinnamon-hair-roblox-free_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/howto-hack-gear-in-the-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/hack-para-murder-mystery-2-roblox-2021_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_off00002dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DBF 21800 bytes
SHA-256: 14398d196957849441244258a09ae2fe5e53438c6a94d53586f7089dfd8a8ce4
font_01_sfnt_off00005dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFE 19384 bytes
SHA-256: de28a66561f48ef455a7e74c3d38ef737581a70ecb9f32033b07134a01356d69

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