Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6d13bf1ea83c162…

MALICIOUS

PDF

47.1 KB Created: 2021-06-03 05:37:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1aadd8068ad6a4b15821b9ca35d5e680 SHA-1: 21c348125c7012ad929a9aa96e5bbe53b9902502 SHA-256: b6d13bf1ea83c162e5315807ae1079d5d61d7aa0c73a9363403904caa505f40a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a prominent link that redirects to a URL associated with malicious activity, specifically a 'game hack' generator. This lure is designed to trick users into clicking the link, likely leading to further malware downloads or phishing attempts. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/479516143/minecraft-hacked-client-game-hack In PDF document text
    • http://digilib-pps.unja.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/static-moonactive-net_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/robux-now_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/june-29-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/lua-roblox-hack-scripts_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-heaven-free-spins-and-coins_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5405 25028 bytes
SHA-256: f636f2df6b1825932777c3819c2f0b10d544fe6409e7cacd069be842bbc0a227
font_01_sfnt_off00008c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C55 2940 bytes
SHA-256: ae8acc7f13e86db3aed98d7dfb73e70e16f4dedb45e9f0467460b76f54e1a1bb
font_02_sfnt_off00009664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9664 17988 bytes
SHA-256: 60084e38a3b13cc374d8b54708ec2a3852040562095209170bda5240b53bf335

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