Malicious PDF — malware analysis report

Static analysis result for SHA-256 2585f0c2ea1ee81d…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 19:47:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6de301c7b29191a589bca1b513f22c5b SHA-1: 189e57350a346645e33f3af01b3569b33c125274 SHA-256: 2585f0c2ea1ee81da39a820ae604ccfefd991274b632c64bc1126075e64c6bf0
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 0.9980

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 http://netcdn.tw/app/479516143/how-to-download-minecraft-java-edition-for-free-game-hack PDF link annotation
    • http://sttlets.education/senayan//repository/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/robux-hack-no-human-verification-ios_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-free-wings_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-cheats-for-iphone_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/robux-hack-2021-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-cheat-engine-hacks-64_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/block-best-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-cheat-engine-unlimited-cins_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-roblox-exploit-level-7_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/robux-hacks-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-sql-injection-hack_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-big-paintball-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/counter-blox-roblox-offensive-hacks-2021_GM431946152.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_002_off00003151.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3151 23212 bytes
SHA-256: 12a4994cefb5a4806078f712a9c7f37c8ef6d3f5948866dfc6cd720d6657037a
font_01_sfnt_off000065c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C0 18856 bytes
SHA-256: 6547d261892dcf8681aa306c75aad1a1cdff9146f567b6b5237750e581ad9e61

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