Malicious PDF — malware analysis report

Static analysis result for SHA-256 2143c980715355c6…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 11:30:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7c9c884f53b34d9dfc957ed266b62572 SHA-1: 371193b99a6cbc4d15a7e60121130ab276d95526 SHA-256: 2143c980715355c6d85b51d3d13945bfe586f6700ab57a0bcb33098132fc5cf2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a 'free generator / game hack' for Coin Master, directly aligning with a common social engineering lure. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the embedded URI and the document body's content strongly suggest the intent is to trick the user into visiting a malicious URL, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/free-mods-for-coin-master-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/roblox-sexually_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-18_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
stream_004_off00004f41.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F41 25972 bytes
SHA-256: 85b3525905497949ea05029a60717e5c4955b6a5c514e01cc070744574637d72
font_01_sfnt_off000088e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E7 17884 bytes
SHA-256: d16c5c599d3d6644d5dbf16cf85a8b89a6ca3b5553b7cae5f604ea90f23cd4c8

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