Malicious PDF — malware analysis report

Static analysis result for SHA-256 d14e894209f39934…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 04:56:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e4a03ab2334ebec24aa08ad5e727509b SHA-1: aa292d819147d0f665496979a4b468c49bad2881 SHA-256: d14e894209f39934de0c693a6b5b18a61a5b12c7b217c8a6152c6108c3ebcb26
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 a URL that is also flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to 'free generator / game hack' and a URL that aligns with the heuristic findings. This suggests the primary purpose is to redirect users to malicious sites, likely for further exploitation or credential harvesting.

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/free-roblox-accounts-with-admin-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-hack-2021_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
stream_004_off00004f90.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F90 26552 bytes
SHA-256: 66a1a1047881c615f79fde0797f0484a7c91294c9784075a6645082a92823691
font_01_sfnt_off00008b17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B17 19112 bytes
SHA-256: 09bf1800968d972f88f4b5ddeb69be342c9743558351c772e20e3b3d14b7e57b

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