Malicious PDF — malware analysis report

Static analysis result for SHA-256 83c63fc814a85775…

MALICIOUS

PDF

55.5 KB Created: 2021-05-17 13:29:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: dfc67952b63293c73931e9cc99058fb7 SHA-1: 535edaa42fbf7d34586fda5d455423acf0154055 SHA-256: 83c63fc814a857757664016997807a7cb9588e5213b10ae631fe9983e3781b11
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of game hacks and free currency to trick users into clicking malicious links. The document contains multiple embedded URLs pointing to external sites, some of which are raw IP addresses, that likely host further malicious content or phishing pages. The ML classifier also flagged this PDF as malicious, reinforcing the observed malicious behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8407

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 https://netcdn.xyz/app/406889139/coin-master-free-link-daily-game-hack PDF link annotation
    • http://118.174.0.244/UserFiles/File/earn-free-robux-for-roblox_GM431946152.pdfPDF link annotation
    • http://118.174.0.244/UserFiles/File/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/get-robux-today_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/robux-today_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/moonactive-free-spins_GM406889139.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004dae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DAE 25824 bytes
SHA-256: 775eff90ceeb5a85efacdb565e3f88fa7baffee7dae57c084a00ba5e5bf9be85
font_01_sfnt_off00008a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A24 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off000094ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94EF 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA815 18304 bytes
SHA-256: d4d3f57bf8cf1b361744efde21cb2de148eed87c90371e8e56e2c4a81fe787c2
font_04_sfnt_off0000ca1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA1C 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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