Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf10633f06faccbe…

MALICIOUS

PDF

43.4 KB Created: 2021-05-13 03:34:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 975e5825dcc7c6ef47b068aebca09d7c SHA-1: 1a39bba01b23aee79a8920a50ecf80111ed0a508 SHA-256: cf10633f06faccbea3f03d4d522054042ba3dc612ea7014ff7063a72518cb62e
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks or generators. The document body, though heavily obfuscated, contains references to these lures. The presence of a clipboard command lure suggests an attempt to trick the user into executing a downloaded payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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
  • 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/ro-ghoul-script-game-hack In PDF document text
    • http://greasley.website/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/coin-master-free-2021-spin-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
font_00_sfnt_off00004b13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B13 26908 bytes
SHA-256: 64b7c59c519bf934342b32ada10c23e9aebe506069b7cd59c2ae21843893c276
font_01_sfnt_off000087c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C2 18120 bytes
SHA-256: 23416a4f265accecd35463abb88f8064d2787c4310c7b82a5b5da3b5a07e9376

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