Malicious PDF — malware analysis report

Static analysis result for SHA-256 516364c33009cb37…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 04:23:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 37c68deb7bf30637e21fa22293021407 SHA-1: 0f84a72089b3a433554808a446f54aa9ad379510 SHA-256: 516364c33009cb37407cf80c8630fb6ec416654fc3d6b9ed533709ba804473dc
220 Risk Score

Malware Insights

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

The PDF contains numerous links designed to lure users into clicking on promises of free game currency or hacks, such as 'how-do-you-hack-roblox-adopt-me-game-hack'. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The document body and embedded links strongly suggest a social engineering tactic to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-do-you-hack-roblox-adopt-me-game-hack In PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-hack-roblox-jailbreak-on-mac_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-hack-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-hack-roblox-money-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/play-roblox-for-free-unblocked_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-on-mobile-android_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/treasure-hunt-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-vehicle-simulator-money-hack-2021_GM431946152.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_off0000300a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300A 22272 bytes
SHA-256: 35aa343fbb92d5b349d0f6429716693f99340362d5c4948aee2378581d70bc56
font_01_sfnt_off00006168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6168 19940 bytes
SHA-256: eb4bf6ab006cf6e345c68b899bd22d49f1a49d89bb58d0c55b7256b3810dc9fe

Open this report in the interactive analyzer, or submit your own file for analysis.