Malicious PDF — malware analysis report

Static analysis result for SHA-256 72f23339fa0b339a…

MALICIOUS

PDF

37.0 KB Created: 2021-07-02 08:05:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 16da574a2ccc7276550c616107d41f4a SHA-1: 5b4197d0e93ab47cfe27d5114b19a410475a00ff SHA-256: 72f23339fa0b339a1761ff8b8acea1be2de1ce098fab518fe6c6131f8f2ef097
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirectors and sites offering game hacks. The heuristic firings confirm that the PDF links to malicious redirector infrastructure and lures users with game-related content. The document body, though partially obfuscated, contains references to these lures and URLs, indicating 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/roblox-change-team-hack-game-hack In PDF document text
    • http://suaedy-library.net/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/hack-robux-sin-verificacion_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-in-obby_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/hack-roblox-dragon-ball-rage-anti-kick_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-hacks-pc_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/insta-kill-hack-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-vip-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-free-robux-no-hack_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/master-game_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-no-human-verification-2021-or-survey-generator_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A24 22408 bytes
SHA-256: 4e70a6794b6d9391f698cbf3aff1ba36de81d2c85eb988c495cf1624e9f7525f
font_01_sfnt_off00006bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC3 19084 bytes
SHA-256: 87a4ddf7a60f5c89c66a6418be2386d65d963c32ee355a0a9e8edf6ae41f5eb4

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