Malicious PDF — malware analysis report

Static analysis result for SHA-256 274e9c490f1ddc60…

MALICIOUS

PDF

36.0 KB Created: 2021-06-19 20:03:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 60f656a9d947f0c14cacaef369ca0606 SHA-1: c37877ac81c4e723d8cf70267ecc8a0e80542c4f SHA-256: 274e9c490f1ddc60e3225ddc7d17c5899426e9903a38df2e231d96256e35be9d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as game hacks and free currency generators for popular games like Roblox. The primary lure is the URL http://netcdn.co/app/431946152/roblox-tokyo-ghoul-bloody-nights-level-hack-game-hack, which is designed to lead users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest 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-tokyo-ghoul-bloody-nights-level-hack-game-hack In PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-a-free-backpack-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-speed-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-glitch-mobile_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/wwwrobloxcom-cheat-codes_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-how-to-cheat-on-obstacle-paradise_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hack-dansploit_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-pastebin-hack_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/hacker-00-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/building-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-without-doing-anything_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_off00003417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3417 22400 bytes
SHA-256: 86bf0d00d95b840d218da2e4e42706ecd1bdae6bde091d4fd755c584cf5c4734
font_01_sfnt_off000065c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C9 19652 bytes
SHA-256: 23ffb8decc8efe41aa4c1e29d5d1013434a9f72e3d13e865de382a555f34c4c0

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