Malicious PDF — malware analysis report

Static analysis result for SHA-256 60dfb0bb3599fc8e…

MALICIOUS

PDF

35.7 KB Created: 2021-06-30 11:22:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 28c00325a8372d21ebd5808a0598845b SHA-1: 28f43a80ea09944e13564c49ee233dbba294b3ab SHA-256: 60dfb0bb3599fc8e184a3c1d7d6825afad340444ff0aa754e5deaa8b9f46e7b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirector lure, pointing to a URL that likely leads to malware. The document body and embedded URLs reinforce this, suggesting a phishing attempt to trick users into downloading a malicious payload. No scripts were extracted, but the overall pattern indicates a malicious redirector used for initial access.

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/431946152/2021-how-to-get-free-robux-game-hack In PDF document text
    • http://www.library.gkigadingserpong.org/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-tix-on-roblox-ipad_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/imy-roblox-account-got-hacked_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-roblox-military-script-executor-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-loopkill-on-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-obby-for-free_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/pagina-para-hackear-cuentas-de-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/cheat-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-roblox-printable-valentines-cards_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-free-robux-generator_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_off000032eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32EB 22604 bytes
SHA-256: af545349a92153ecaaa2147d04d5c26f2d79d496c12ca5b86a6baaaa008b6b33
font_01_sfnt_off00006567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6567 19384 bytes
SHA-256: 8d40db4da657ecdc3f27bef1aa3790d5e2bb65efea8dcbe0e56fd44a6c318096

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