Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dd27c2a8d89f412…

MALICIOUS

PDF

33.8 KB Created: 2021-06-18 04:04:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 074e5d7db33cb010877309bab07cdb43 SHA-1: bc2ae450805509d571328359c2ab0004bf96bd7f SHA-256: 5dd27c2a8d89f41247f987497a80e034dcccede13480d49fef6622a7a42dc7cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free in-game currency, such as 'how-to-get-clothes-for-free-on-roblox-game-hack'. These links are flagged as malicious redirectors, indicating a likely phishing or malware distribution attempt. The document body and heuristics confirm the lure is related to popular games, aiming to trick users into clicking through to potentially harmful content.

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-get-clothes-for-free-on-roblox-game-hack In PDF document text
    • http://eurosystemssrl.it/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-what-to-do-when-you-get-hacked_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-free-robux-google-chrome_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://eurosystemssrl.it/images/how-do-you-get-free-robux-2021-july_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/tiktok-free-fans-video_GM835599320.pdfIn PDF document text
    • http://eurosystemssrl.it/images/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/fb-coin-master_GM406889139.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_off00002de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE8 22312 bytes
SHA-256: e929657bb00db90bfd9444b2fd939f6d3ffd2c9147780074e53ee050cfb6a0e6
font_01_sfnt_off00005f69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F69 18900 bytes
SHA-256: 818d863e060e354fb295fa75cff55decbc953227a083a5e0aa81a0d083544e9f

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