Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e35749dc9b64002…

MALICIOUS

PDF

41.5 KB Created: 2021-05-16 03:04:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 88e8a93e64e44723bfaac8da5ecc921e SHA-1: aa15304ce238a9c3f71a32574d062a63cc3951b9 SHA-256: 6e35749dc9b640022aa5272a8d5bd525e03c3f253e2e9555fe74c46d924d50ce
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a remote-support lure. 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 5

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/toolbox-for-minecraft-ios-game-hack PDF link annotation
    • http://precisionheavyhaul.com/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/get-robux_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/bux-life-free-robux_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_003_off0000496b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x496B 24556 bytes
SHA-256: 4790f941c6dec57cd03a6e7a66c0b07c2d57d12f135f6e7fa252559b04fb582d
font_01_sfnt_off00008075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8075 18152 bytes
SHA-256: 00efac36cff71ff299be5bc46999ebb3fdd16e50bdaeff84e7245ae46705892c

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