Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6d2b9c3bc200109…

MALICIOUS

PDF

35.4 KB Created: 2021-06-18 16:24:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: bdddb51d9e9584f27eb451dc49289170 SHA-1: 4d649fb9b5c7c4f639b7b3c4666fd78519a97246 SHA-256: a6d2b9c3bc200109ae65c6832070defb9641349bcf9a5a0d1e91ce5d03c6b75f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and free currency. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and 'PDF_MALICIOUS_REDIRECTOR_LINK' strongly indicate a phishing or scam attempt. While no scripts were explicitly extracted, the document's structure and embedded URLs suggest it's designed to lead the user to a compromised site.

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/how-to-gtte-free-robux-2021-may-12-game-hack In PDF document text
    • http://reggieslockandkey.com/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/block-best-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-pastebin-com_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • http://reggieslockandkey.com/images/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-live_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-roblox-hair-boy-rainbow_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/code-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/cool-minecraft-hacks_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9C 23132 bytes
SHA-256: d198018179171e5f88c52ca2d1c8f7ad3079f716cbd9ba4088a9bb2569c8e39b
font_01_sfnt_off000063bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BC 19576 bytes
SHA-256: fd7a8af4a74911fe494eba3b2c902e351837a9b8ed7c9427011c2e94f96a8305

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