Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f28c24350ce4102…

MALICIOUS

PDF

35.6 KB Created: 2021-06-25 03:34:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 10cddf825091ce8e2ed3f1a6236f79e0 SHA-1: e6c9f625368aff5af7c783edc24af3e81a4f3610 SHA-256: 8f28c24350ce4102b2fec1c3283f4ac3da77c937a47e79f2029ccff34ff03a1f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with one specifically identified as a malicious redirector for game hacks. The document body text also contains a prominent link to this redirector, suggesting a lure to trick users into downloading potentially malicious content. The ML classifier also flagged this PDF with high confidence.

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/free-roblox-without-downloading-anything-game-hack In PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/hack-arsenal-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/robux-earn-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/control-people-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/roblox-phantom-forces-hacking-scripts_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/robux-hack-for-roblox-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/como-conseguir-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-shirt-templates-roblox_GM431946152.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_off00003269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3269 21976 bytes
SHA-256: 3f563655ce75d34c4dfe62df4e12990ae10787fa5bc249f3588325f7341aaab6
font_01_sfnt_off00006326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6326 20064 bytes
SHA-256: d75e710ff70d92056e35612d9c23db69d77993ffe504d16606efbfe410f20090

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