Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e4b2151762b168f…

MALICIOUS

PDF

45.8 KB Created: 2021-05-18 04:01:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 467c4d36126f2d31aa65a2657c111b54 SHA-1: d5cdd378d7d4b4af7637e83c25165ceb8ea95c78 SHA-256: 1e4b2151762b168f59eb92fe5f01e7122cd1fd77fbc6d1e86b059ee75b2e1a6f
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 0.9432

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/406889139/descargar-coin-master-hackeado-game-hack PDF link annotation
    • http://astdubai.co/userfiles/files/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/robux-codes_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/mcpe-com_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-2021-robux_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
font_00_sfnt_off00004b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B06 26668 bytes
SHA-256: 293896b2cfdb14af6ea60dc1b7b0a223f819099a69e9659ec2a7b04f830ed396
font_01_sfnt_off0000861c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x861C 2932 bytes
SHA-256: 7aee9e503a5ce204a8a322bb3f7914cecf17d3f4dda4772d0d3ff378ba95a3d6
font_02_sfnt_off00009045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9045 18344 bytes
SHA-256: f36247ffb38554f38145ddbd5964f7161795fb102c5bcaad17a29f5e2fd4ae9a

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