Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdcee8fc662667b8…

MALICIOUS

PDF

33.3 KB Created: 2021-07-04 12:18:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: ee21ce3dfefac0a1b3b3c68079840b3a SHA-1: 7031f93ce0644d7487012c94718cde8a59bd7a6e SHA-256: cdcee8fc662667b8f46b1e36442cac8fa6f6453c1066396b7b0a49fd4de85037
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on offers for game hacks and free in-game currency. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were extracted, the document's structure and embedded URLs strongly suggest it's part of a social engineering campaign to drive traffic to potentially harmful 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.tw/app/431946152/roebucks-on-roblox-game-hack In PDF document text
    • http://proyetec.com.co/aym_image/files/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/thebesian-get-free-robux-roblox_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-robux-hack-script-for-free-robux_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-robux-website_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-free-robux-simulator_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-doomspire-brickbattle-hack_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-one-piece-mythical-fruits-hack_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/pokemon-go-free-latest-version_GM1094591345.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-abs-tshirt-roblox_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/download-hacked-games-coin-master_GM406889139.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_off00002c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8D 22248 bytes
SHA-256: 91dd84fda69af255d3fb0c5639f3a228d4e30d09941b50bb8d9d69f9ad4feb10
font_01_sfnt_off00005dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCE 18796 bytes
SHA-256: 58d0b4866d64dafe4f5ce9b57e76ffce2d11e44b7407c5bc7b475816988fb519

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