Malicious PDF — malware analysis report

Static analysis result for SHA-256 72428d749e6066e6…

MALICIOUS

PDF

42.2 KB Created: 2021-05-12 09:04:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ef3e5d877b63bdf092de351faa050da5 SHA-1: 1a6163e9144384fbf2da8816c56977414fe66e06 SHA-256: 72428d749e6066e62b5926a7e33895551ef2e0a1f97d064a6569a0c80e9084eb
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 0.9971

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/demon-roblox-game-hack PDF link annotation
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-spins-generator-no-verification_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_off000049a2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A2 24732 bytes
SHA-256: 45e1a8d3dba07bfd6e8e6859b3dc91c90f16d571704b4a702abc67c914a90ba5
font_01_sfnt_off000082b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B9 18212 bytes
SHA-256: c9375e33fa218a20af396b21f97d86776c6e3efb35be63d5e3056768a37a53d5

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