Malicious PDF — malware analysis report

Static analysis result for SHA-256 d24e6ed514c0b7ec…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 01:14:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 01bffd9e86729ed775158e9f16cccd61 SHA-1: 0edf97de9cdef50b77e8713ca630da319a5116cc SHA-256: d24e6ed514c0b7ec172c7c1356588a07cd07e3b435c94b2650c5a99691790923
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body and embedded URLs promote 'free generator / game hack' content, aiming to trick users into clicking the malicious link. This likely leads to a second-stage download or exploit, hence the inclusion of T1203.

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/406889139/how-to-get-free-coins-in-coin-master-game-hack In PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library//repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library/repository/free-robux-august-2021_GM431946152.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library/repository/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library//repository/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library//repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library//repository/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library/repository/roblox-how-to-hack-games_GM431946152.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library/repository/getrobux-now_GM431946152.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library/repository/robux-only_GM431946152.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library//repository/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library//repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library/repository/download-rc7-roblox-hack_GM431946152.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library/repository/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://stikesyahoedsmg.ac.id/Digital_Library//repository/coin-master-free-download-pc_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
font_00_sfnt_off0000334c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x334C 22840 bytes
SHA-256: 10f4ed31e03a2dab9a3c67bf9ae315dd6bf5a05eb8c7e3d6bdc729e051dc33b3
font_01_sfnt_off00006695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6695 18164 bytes
SHA-256: 9fab875a536b983537b9433768b1ea3e5c55ad95c87001a66781b974c182b662

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