Malicious PDF — malware analysis report

Static analysis result for SHA-256 4886a20bba2e7b5f…

MALICIOUS

PDF

42.8 KB Created: 2021-05-11 19:30:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5957af09d48ce4cec40f0523e0a58f39 SHA-1: 9c9da4a5c8b7d5b0146d7ba2d3610226549eef04 SHA-256: 4886a20bba2e7b5fc8d0e041ebcede56897c5569a13c51839858dac70c597e9e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body also contains multiple URLs related to game hacking and free in-game currency, suggesting a lure for users interested in such topics. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 3

  • 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/how-to-hack-into-someone In PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-free-spin-today_GM406889139.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
stream_003_off00004a90.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A90 25064 bytes
SHA-256: 7cde5fcb09f71881388151d848148ba8bb7dcc1cbaf61ce5f8c454331cf7219a
font_01_sfnt_off000082b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B7 18912 bytes
SHA-256: bf4ecd0153dd3a330a8d8544a3db10b129edd23679e66a7dba01ca4f284b0ccb