Malicious PDF — malware analysis report

Static analysis result for SHA-256 08a92ff45c64e4b4…

MALICIOUS

PDF

33.6 KB Created: 2021-07-01 20:19:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: d95f802ef89d79d4aafa31f2f678a47f SHA-1: 661df0290c7ea75653fabcb3fde68e5b5e5f0421 SHA-256: 08a92ff45c64e4b4722651d371a5bd2eaf25e4ebb862b8f6b860263d74b33861
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising free in-game currency for popular games like Roblox. The primary lure is a "free generator / game hack" for Roblox, which is a common social engineering tactic to trick users into visiting malicious sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent, likely leading to further malware or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-com-free-robux-game-hack In PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/roblox-tracker_GM431946152.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://www.sun-a.com/ckfinder/userfiles/files/coin-master-reward-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_off00002fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FDA 21304 bytes
SHA-256: 65009201614a47c8121a3768faf62246738f5e2c5fecb07d63c01613b9ab444c
font_01_sfnt_off00005e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2A 19052 bytes
SHA-256: c7437b3e7bd48948350c0c34152667cbccbfce8be2367ca38aabcff84c85cc8a

Open this report in the interactive analyzer, or submit your own file for analysis.