Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2173191d3311cf5…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 14:49:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: caa8db86eea09a4157c2b691db4ce041 SHA-1: 98b888e59a649cb8e9c4f723fa1bdf3fc59dcc0a SHA-256: d2173191d3311cf54b337c39d776bf2fa32f8695f22061d3352402b7f5526daf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users interested in game hacks and generators. The document body explicitly contains the URL http://netcdn.co/app/431946152/free-swords-roblox-game-hack, which is flagged as a malicious redirector. This suggests the primary goal is to redirect users to potentially harmful websites.

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-swords-roblox-game-hack In PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-robux-hack-apk-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-to-get-free-clothing-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/hack-in-to-roblox_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_off00002f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0E 22356 bytes
SHA-256: 7e426cb54670ca85862f61b59853308610dd60fc31d943cac940974e69621ad4
font_01_sfnt_off0000606b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606B 18988 bytes
SHA-256: 9a841bb3e6fe1da68f64b23b9558701b1ffef3f768d96b86299c245cf9c9cf06