Malicious PDF — malware analysis report

Static analysis result for SHA-256 66d64474f283aff7…

MALICIOUS

PDF

33.0 KB Created: 2021-07-04 13:48:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5187c8a9843c77973cff7448cd3c999d SHA-1: b3dea88e2bf9c67a2ea92ef2f9b9309a0e129ffa SHA-256: 66d64474f283aff71e5ee729ff9da7ccd3f70a1ac4f9613ff78c17abed93854b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and further PDFs, all masquerading as game-related cheats or generators. The document body explicitly contains the lure 'CLICK HERE TO ACCESS ROBUX GENERATOR' and directs users to the malicious URL http://netcdn.tw/app/431946152/roblox-hack-codes-game-hack. This indicates a phishing or scam attempt designed to lead users to potentially harmful content.

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.tw/app/431946152/roblox-hack-codes-game-hack In PDF document text
    • http://foo.com.tw/files/free-stormtrooper-helmet-roblox_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-no-verification-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/hpw-tp-change-your-name-in-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-get-free-coins-in-roblox-bandit-siimuator_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-add-robux-to-your-account-for-free_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/ban-hammer-roblox-free_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-hack-someone-on-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/make-your-own-minecraft-server-free_GM479516143.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_off00002cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB1 21624 bytes
SHA-256: 3628cbed51dd94a3da5b86131487eb72e54ff4759851dab88ebbf013bbf7ffd0
font_01_sfnt_off00005c49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C49 18828 bytes
SHA-256: f26a990a68310c8fbc4066cf95e1007dcb6ef0a42f457348a493555e6997b3f1

Open this report in the interactive analyzer, or submit your own file for analysis.