Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d5efff0d86e270…

MALICIOUS

PDF

46.9 KB Created: 2021-05-16 17:37:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: cb1c7023614d471eb2a46ef3b4d4e6de SHA-1: 8682b2458b51b41f4b8e542bc9673bb657882e6e SHA-256: b0d5efff0d86e27038cee7cc6bd1459005f8cb47c61273ae155e3a03dbe1a2c3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and currency to entice users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or exploits. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to redirect users to potentially harmful websites, aligning with a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/431946152/roblox-hack-me-game-hack In PDF document text
    • http://www.myresidence.lu/userfiles/files/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-18_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BEE 25484 bytes
SHA-256: 6838410bb4d8549668538ccb8a818ad2ba1e3a8cde8a246f2875db09906dda66
font_01_sfnt_off0000861c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x861C 6100 bytes
SHA-256: f866077ce59d6ea276f75e4af76daa2aab5f3a1a679df144776123d85664d65c
font_02_sfnt_off000094a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94A8 18376 bytes
SHA-256: aef395c884b1121fa113f915db4056a7b0027cd471dc4d96a5cdd03c50f60cf3

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