Malicious PDF — malware analysis report

Static analysis result for SHA-256 6000d8c8222642e9…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 10:42:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d672972735494447c8b7b33c096f7ac3 SHA-1: 6c836ebd37835dc9c1690303546d3be9cb239a19 SHA-256: 6000d8c8222642e9e6cbe81fbbb7a3c5e46b7a6a7de1223c4defddca25ba4397
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to a known malicious infrastructure, specifically advertising 'free generator / game hack' content. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to lure users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure itself facilitates these malicious redirects.

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/431946152/7-year-old-roblox-game-hack In PDF document text
    • https://www.legclub.org/uploads/files/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-any-roblox-game-pass-for-free_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/roblox-plus-ultra-hack_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-village-4_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/can-i-create-roblox-game-free_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/pastebin-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-roblox-codes-2021-no-download_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/ww-roblox-come_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-no-vireus_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3034 22300 bytes
SHA-256: b2eecb154b52d6453ff99dfab045386b944f11db0a9b01a5f39f894bd5cf6d9a
font_01_sfnt_off000061de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DE 18880 bytes
SHA-256: 85e4e9e0d9805ef16fec6cb3c84a8d690b5a293c59c21ae1973f218ecc3fb6d4

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