Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fd92e3619aa2a7c…

MALICIOUS

PDF

34.0 KB Created: 2021-06-30 06:19:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d43d3ba41836a9cb61892c3854b1fc43 SHA-1: c8800a61da2192a71e2cd88964eca4edb11b616c SHA-256: 2fd92e3619aa2a7c6451e41b7f6df457746696e0ff912c146e303614add00389
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as game-related generators and hacks. The primary lure is '5 Games To Get Free Robux', directing users to 'http://netcdn.co/app/431946152/5-games-to-get-free-robux-game-hack'. This suggests a social engineering attack aiming to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious redirector links and the lure strongly indicate a phishing or malware distribution attempt.

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/431946152/5-games-to-get-free-robux-game-hack In PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/dominus-from-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/is-roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-2021-real_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-egg-hunt-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/apps-for-free-robux_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_off00002f3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3F 21848 bytes
SHA-256: 602a3bc8e8f8a5e2aee7d2b63e4d1a8faa40678ba9f274cb7efbb84be419cf77
font_01_sfnt_off00005f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5A 19212 bytes
SHA-256: e46cbe2f7df028bb93e22ac1101485b4e082d6b68acefe21ccbf50eeff892e9d

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