Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d75c642d942af1…

MALICIOUS

PDF

45.1 KB Created: 2021-05-12 00:36:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 55825136a8656fd792b250efeecc9241 SHA-1: 3878ea151c0921a0c16b1d1427fbe4034847d804 SHA-256: 26d75c642d942af1da61c22488125c85816b37d5e5ac1af4b729e185b05e71ea
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure. The document body and embedded URLs reinforce this, pointing to a URL associated with game hacks. While no scripts were extracted, the primary malicious function appears to be redirecting the user to a potentially harmful external site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/minecraft-java-edition-key-free-game-hack PDF link annotation
    • http://srisaket.nfe.go.th/UserFiles/File/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/scaffold-minecraft-hack_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b8f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B8F 25056 bytes
SHA-256: 37f6ad7e3d6289715860ed1c1e995bb4b47c2f21cf488ce00fbdfcb14548134d
font_01_sfnt_off000083e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E6 2824 bytes
SHA-256: 61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
font_02_sfnt_off00008d8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D8C 18344 bytes
SHA-256: 334aec38d846e20b2b1a8e37a7c069b76e72c9b1d6d0d2be887913576bf47b02

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