Malicious PDF — malware analysis report

Static analysis result for SHA-256 b82b1c72ce9dc097…

MALICIOUS

PDF

44.0 KB Created: 2021-05-17 00:54:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ee86943d4cff215cc658949a92a98600 SHA-1: 38b263e1c84434a2a9f89ac351c927da4a0b1ceb SHA-256: b82b1c72ce9dc097993e00515dc90374bc8ae88f7df9cc41db14997cbae65279
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/roblox-heroes-online-game-hack PDF link annotation
    • 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-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/minecraft-free-unblocked_GM479516143.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-free-blogspot_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-online-hack-link_GM406889139.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_off00004b6e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B6E 28436 bytes
SHA-256: c5f1c1a46345a12ee24c43e9f2444a372970315f8a85f2bb79a8a67a9651c637
font_01_sfnt_off00008acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACB 17904 bytes
SHA-256: b7f11a2df82e7930abe2842f58c991707f2f159cab445d86aa6820b01792cbd7

Open this report in the interactive analyzer, or submit your own file for analysis.