Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8413c2cd1f5dd8…

MALICIOUS

PDF

43.3 KB Created: 2021-05-19 16:59:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9aeda19698172135f6f3f36018332b4d SHA-1: ad1063f425a07e88cc36497f07894cbfb9526fe5 SHA-256: 2c8413c2cd1f5dd8c7f1f728738d03f9f5f05e84d633741c16a13af04ea5d76d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to malicious infrastructure, masquerading as game hacks and free generators. The primary lure is a 'Coin Master' hack, directing users to a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/406889139/coin-master-how-to-get-japan-sushi-card-free-game-hack In PDF document text
    • http://razredna-nastava.net/files/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/robux-come_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-500-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-hacks-list_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
stream_003_off00004c50.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C50 25312 bytes
SHA-256: c17bcac670fcbc0e7dcc7b7bb657883f960393d162aafa3a28748d40f4966dd4
font_01_sfnt_off000085f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F4 18696 bytes
SHA-256: b658d8f1c141fc8c479f08926c8ce77f4430151ae81ac58e32bab20f08e84866

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