Malicious PDF — malware analysis report

Static analysis result for SHA-256 838098f8df1e7694…

MALICIOUS

PDF

41.6 KB Created: 2021-05-12 11:36:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 211ecd75fcaab76b31011ab953970412 SHA-1: 511d6a62526815e7f83685ff161bf74cea82353c SHA-256: 838098f8df1e769490df931ff3e953949d65945ae3883c57f8dd69882a8b8572
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of 'game hacks' and 'free generators' to entice users into clicking embedded links. The primary link, https://netcdn.xyz/app/479516143/wizard-hacks-game-hack, is identified as a malicious redirector. The document's structure and embedded links suggest an attempt to drive traffic to potentially malicious websites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/wizard-hacks-game-hack In PDF document text
    • http://livebybuddhism.org/images/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://livebybuddhism.org/images/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • http://livebybuddhism.org/images/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://livebybuddhism.org/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://livebybuddhism.org/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://livebybuddhism.org/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://livebybuddhism.org/images/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://livebybuddhism.org/images/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://livebybuddhism.org/images/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://livebybuddhism.org/images/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://livebybuddhism.org/images/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://livebybuddhism.org/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://livebybuddhism.org/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://livebybuddhism.org/images/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://livebybuddhism.org/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://livebybuddhism.org/images/infinite-robux_GM431946152.pdfIn PDF document text
    • http://livebybuddhism.org/images/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://livebybuddhism.org/images/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • http://livebybuddhism.org/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://livebybuddhism.org/images/best-free-minecraft-servers_GM479516143.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
stream_003_off000048da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48DA 24548 bytes
SHA-256: 1989ea30f40e9661f03a1a927c6dee169a020ad2b178466824a9d65d315f018c
font_01_sfnt_off000080a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A8 18088 bytes
SHA-256: 8b77488254b6aca3f83796c067843361ab864d2cfeb655e2bb6c253d8b72d837