Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a575ba07e42214d…

MALICIOUS

PDF

45.4 KB Created: 2021-06-09 00:33:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: c8bc78f09c681be02deaacf019a828e4 SHA-1: afae66e42e20feaf4727631f930637a7b18c056f SHA-256: 3a575ba07e42214d380411a66e8734a3c3d82cb372ba0ac6b8006de1a147d102
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free generators, directing users to malicious redirector infrastructure. The embedded links, such as 'https://netcdn.tw/app/431946152/roblox-hack-script-pastebin-2021-game-hack', are indicative of a phishing or scam attempt designed to lead users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a malicious intent to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/roblox-hack-script-pastebin-2021-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/get-verified-tiktok-free_GM835599320.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/weird-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-112-2-hacked-client_GM479516143.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_off0000504a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x504A 26552 bytes
SHA-256: 5ba5e2bc57bd5ef1022a9b6feddba36c67e2687eacebb30d74b4b5800777cf7f
font_01_sfnt_off00008c20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C20 19136 bytes
SHA-256: 733007c542b3f7fab65403df1c4614d3cd35101333d9e9dd72e190c0e95c02e7

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