Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ec35049f7aeb74d…

MALICIOUS

PDF

34.3 KB Created: 2021-07-02 02:56:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a421043390511f2087001692b64369f7 SHA-1: ad6875e1d040c1a38cd1aea4a0352e18ac2a7442 SHA-256: 5ec35049f7aeb74d56cc99cec56bea20fcb090753c09c0bd2a769992fa7d80f8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external resources, including a primary link to 'netcdn.co' which is flagged as an external URI. The document body and extracted URLs suggest a lure for game-related cheats or hacks, specifically for Roblox. The ML classifier strongly indicates maliciousness, and the presence of external URIs points to a potential download or redirection to a malicious payload.

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/veorra-set-free-roblox-id-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-flood-escape-2_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-promo-codes-roblox-april-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-auto-farm_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-csgo-skins-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/chad-the-beast-and-audrey-the-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-2021-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-quick-and-easy_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/april-1-2021-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-dragon-ball-rage-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-roblox-coins_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hacks-for-tower-of-hell-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-no-human-verification-2021-iphone_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/exploit-hacks-2021-counter-blox-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-400-robux-code_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-money-generator_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-xbox-packages-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A2 21848 bytes
SHA-256: 84beed547b99c7270a6c1c8f6311c87d4bdb8cfe6165ca3ab5114cf7fc1788b1
font_01_sfnt_off000060e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E2 19060 bytes
SHA-256: cb532685d02cc9633b548febfe0b60c13025298badf8690310148d5c8cff39df

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