Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5992ad8bae6b94f…

MALICIOUS

PDF

48.1 KB Created: 2021-05-16 23:20:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 13148495e6cbfe36b59b0f689dce5f84 SHA-1: aba1c9bcec61acd81703c22b720c0630c07e839d SHA-256: d5992ad8bae6b94f14c41939652c0f8ffda6c154dcc59b85d75f6a55dc33d5cd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The primary redirector URL is https://netcdn.xyz/app/431946152/strucid-aimbot-game-hack. The document body, though heavily obfuscated, contains references to this URL and other similar PDF lures, suggesting a phishing or scam campaign. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of further malicious activity upon user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/strucid-aimbot-game-hack In PDF document text
    • http://apostolosandreaslemesou.com/images/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/roblox-weird_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-minecraft-worlds_GM479516143.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_off00004a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6F 32144 bytes
SHA-256: ea67308a0eb5ff9c51fb53abd60daa4ab787e3f77029c272b578c59a3ea3e0a0
font_01_sfnt_off00008fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC1 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000099ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99AB 18296 bytes
SHA-256: 5e76754d7c88df49b426088ed5724e1b633068c8c381957419361bbc1c60a3f3

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