Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f8b9cd57d4189c7…

MALICIOUS

PDF

34.3 KB Created: 2021-06-18 20:59:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bd136b5f69ec9406694ef4e60ca8cbcd SHA-1: 1068daa2ee77c9e06fe4ce3ae4a09732160695a0 SHA-256: 3f8b9cd57d4189c762a5f4bd647c123282b1b5eb8cda43b1471c9d2f0e68552e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free generators, specifically mentioning Roblox. It contains multiple links to known malicious redirectors and infrastructure, suggesting an attempt to lead the user to a malicious download or exploit. The presence of a visual download button further reinforces the deceptive nature of the document.

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/roblox-software-free-download-game-hack In PDF document text
    • http://caraless.com/images/roblox-dragons-life-hack_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://caraless.com/images/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://caraless.com/images/how-to-see-chegg-answers-free-tiktok_GM835599320.pdfIn PDF document text
    • http://caraless.com/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/free-dances-on-roblox_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/multiple-roblox-hack_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/roblox-hack-de-romper-las-paredes_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/roblox-free-animation-pack_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/how-to-get-the-roblox-hack-skript_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://caraless.com/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/roblox-super-jump-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/free-infinite-robux-regular_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE3 22384 bytes
SHA-256: 0456ffb0ddcef5a5aa48a99a27308e39d3fff29626bfe813464d07cb886f45d0
font_01_sfnt_off000060dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DC 19072 bytes
SHA-256: ddceacaf64aa470e996c7866d05eddedc43699a99e0f7ee330b2c5f3fb931764

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