Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca3dc083aa5d195…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 18:17:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 493376755b3cbefc235e47f712d5591b SHA-1: 8566adc27c4e72419252135aaf198e0d7e718d51 SHA-256: 0ca3dc083aa5d19543f349f3fe54924b285a2ef001c407c9a589db6583207637
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including a prominent one to 'roblox-fun-com-free-robux-game-hack', which is flagged as a lure for game hacks. The ML classifier also strongly indicated maliciousness. The document body and embedded URLs suggest a social engineering attempt to trick users into visiting potentially malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-fun-com-free-robux-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-giver-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/descargar-qtx-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-scam_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/money-and-ranking-hack-roblox-link_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-robux-and-builders-club-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-easy-december-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-bc-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/group-funds-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-generator-legit_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-bedrock-free-download-pc_GM479516143.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_off00002d70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D70 22904 bytes
SHA-256: 5d4f45f85709f03b329f6c4314f70df4d00d20bf870fbf6751176a389d44a732
font_01_sfnt_off0000610a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610A 19052 bytes
SHA-256: 3b2abcc7aa29ca008ea5e4cc3b72e95e65b47650fe7c616c7ae72cc37841b392

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