Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6e672daba131358…

MALICIOUS

PDF

46.1 KB Created: 2021-06-03 23:42:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 464a4facbb175ba734dae3787a187b30 SHA-1: 089a14519a8e8d683bf37a52524b79a4f142a2d6 SHA-256: e6e672daba1313588d6d52c5bce83c5989d0a5d24191304747b82561b748a314
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector, designed to lure users into downloading potentially harmful content related to game hacks. The document body and heuristic firings indicate a redirection to external URLs, likely serving as a distribution point for malware or phishing content. No scripts were extracted, but the PDF structure and embedded links strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/406889139/hack-crack-for-coin-master-currency-game-hack In PDF document text
    • http://library.darmaagung.ac.id//repository/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/minecraft-pe_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004d31.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D31 24388 bytes
SHA-256: 851ca2da1869aead7c9aa2be77f62f562605caca0bb82b23d8590c62187f994a
font_01_sfnt_off000084f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F2 3560 bytes
SHA-256: 9d03f7c6c62ba3e7fdc0441e9d982a863b2b60b781165d6920512f68ecc4a440
font_02_sfnt_off00009178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9178 18200 bytes
SHA-256: a4065947dd7f6e5eda37ae81e5cddae0dd41603404a555eeb787a708b7a40094

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