Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c6bea2d62f0a677…

MALICIOUS

PDF

35.5 KB Created: 2021-06-25 15:35:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b3d2b23f017b370fe1549522b5119ffd SHA-1: 921931980cad7db78cfc781e6b5dd175ee4e67ea SHA-256: 1c6bea2d62f0a67787c0009cb165dace281582d31321ce3eca2ff5ca18cc1a2a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to redirectors, specifically advertising game hacks and cheats for popular games like Roblox and Coin Master. The heuristic firings confirm these links point to known malicious redirector infrastructure. While no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or malware distribution lure, likely intended to trick users into downloading further malicious content or visiting credential-harvesting sites.

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-murder-mystery-cheats-game-hack In PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/roblox-cp_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-hack-roblox-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/hacks-to-g-et-into-houses-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-get-free-robux-with-tampermonkey_GM431946152.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_off0000319a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319A 22744 bytes
SHA-256: 0e4414c56a9ece73117750cb3f30b5f8d8cfd690bb7293c76d7dccddbb5d6d01
font_01_sfnt_off000064a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A2 19444 bytes
SHA-256: e51f380d96b4055d439b7a481efea37eaeb03e3a97d86e3567ff80ea2f180c73

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