Malicious PDF — malware analysis report

Static analysis result for SHA-256 57ae888db25d7f7a…

MALICIOUS

PDF

47.1 KB Created: 2021-06-03 06:02:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f7b60582d47c7273641ed20c3470d7b7 SHA-1: 31077d77fe3133e0d6aae8e31986297c2aa14a7c SHA-256: 57ae888db25d7f7ac7ac8360bd3917a017a9cfafb3b91af8688d2cf7e85438b4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them by promising game hacks and free currency. These links redirect to malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_GAME_HACK_REDIRECT_LURE' heuristics. The document body, though heavily obfuscated, contains references to these lures and embedded URLs. The primary attack pattern involves social engineering to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/431946152/roblox-hack-site-game-hack In PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/coin-master-tips_GM406889139.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/free-tiktok-fans-no-verification-2021_GM835599320.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://pinbandulsamirwisuda.com/ckfinder/userfiles/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051cd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51CD 25460 bytes
SHA-256: cee9d0756e24146f562cd39912b4e9aa3e356bc73448505cafc7a998092189ed
font_01_sfnt_off00008b1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1E 2824 bytes
SHA-256: bd082aa73fbb1a8b3bd2e5c998d3d8e31d1dfc71ea36f846af746f69a0d2ab7f
font_02_sfnt_off000094d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94D2 18408 bytes
SHA-256: baa68e8b80fe17984eb0f5893287011db8c451c65a8bba41303beeb2aadfa952

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