Malicious PDF — malware analysis report

Static analysis result for SHA-256 08b1a172b819d076…

MALICIOUS

PDF

33.1 KB Created: 2021-07-03 20:04:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 2f55aae94f0ff32b00555c4d199f6981 SHA-1: d790388b7b564247a84c68fd4d155ddd1382f796 SHA-256: 08b1a172b819d076d0595fb00267206f53753025b73ae416e21df91dbe9bc350
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free generator / game hack" which redirects to a malicious URL. This indicates a phishing or scam attempt designed to trick users into visiting a potentially harmful site. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.tw/app/431946152/how-do-you-get-robux-on-roblox-game-hack In PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/razzberry-roblox-hack_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-robux-card-codes-deutsch_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/roblox-com-free-dominus_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/how-to-make-a-roblox-bot-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/daily-spin_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/roblox-unlimited-health-hack_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/hack-coin-master-pc_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_off00002af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF2 22024 bytes
SHA-256: 1a0ed8dc1d184d3062dc84a7863e133e7c1ea46f09888c1e1e4b00db1d078573
font_01_sfnt_off00005bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC1 19224 bytes
SHA-256: 95775dbe9d5c5d02c2087d1f26a1dbf84b585577f9403205c74baa1bbd57bf4f

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