Malicious PDF — malware analysis report

Static analysis result for SHA-256 59feb132eb9835d1…

MALICIOUS

PDF

42.4 KB Created: 2021-05-11 04:00:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 91ca830e080e2ed8ddfa8a8611f6c304 SHA-1: 0d33b0d77ccc416b58d38b0d1ce3b19108302656 SHA-256: 59feb132eb9835d147042205188c338408d5dd511915b92d878928d2b65f86d9
160 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 primary lure URL is https://netcdn.xyz/app/431946152/free-roblox-clothes-for-your-avatar-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to redirect users to potentially malicious content, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.
  • 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/free-roblox-clothes-for-your-avatar-game-hack In PDF document text
    • http://maestriadental.com/images/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://maestriadental.com/images/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://maestriadental.com/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://maestriadental.com/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://maestriadental.com/images/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://maestriadental.com/images/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://maestriadental.com/images/woman-roblox_GM431946152.pdfIn PDF document text
    • http://maestriadental.com/images/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://maestriadental.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://maestriadental.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://maestriadental.com/images/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://maestriadental.com/images/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • http://maestriadental.com/images/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://maestriadental.com/images/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://maestriadental.com/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://maestriadental.com/images/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://maestriadental.com/images/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://maestriadental.com/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://maestriadental.com/images/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://maestriadental.com/images/moonactive-free-spins-2021_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_off000049a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49A6 24828 bytes
SHA-256: 38d94eb29743a749222ac7e1efbe2100e58398ad6d2b78d11c81bc0a067dbf3b
font_01_sfnt_off000081c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81C5 18860 bytes
SHA-256: 1761c8fbdaafa52a42c2d9c8dd0fbea25e5bec314d4deea8139da4bd569234ce

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