Malicious PDF — malware analysis report

Static analysis result for SHA-256 75042f829012ff41…

MALICIOUS

PDF

44.9 KB Created: 2021-05-15 12:04:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 102739f7aae0f378050ae17a0a79b3a9 SHA-1: 19f45176253e098c137732ef5ccffbfaaba60855 SHA-256: 75042f829012ff41205ebcc1807080c5379fb8dee837cb26f6c19af9367696ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to websites promoting game hacks and generators, such as 'spin-coin-master-hack-game-hack'. These links are identified as malicious redirectors, indicating a social engineering attempt to drive traffic to potentially harmful sites. The document body and heuristics strongly suggest a lure for users seeking cheats or in-game currency.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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.xyz/app/406889139/spin-coin-master-hack-game-hack In PDF document text
    • http://seniornetwanganui.org.nz/images/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/roblox-free-hats_GM431946152.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • http://seniornetwanganui.org.nz/images/how-to-get-free-robux-easy_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_003_off00004acb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ACB 24520 bytes
SHA-256: 41da88ebf2b90c945b316e3ea477548f535ec55ea5631a6d797540675d1a4709
font_01_sfnt_off00008340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8340 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off00008e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E1F 17892 bytes
SHA-256: a3a1b04a82279d9b81c305d9015fdfbc4eb608af79be49bd49bec6a16d15ba5c

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