Malicious PDF — malware analysis report

Static analysis result for SHA-256 c38967280d44d735…

MALICIOUS

PDF

35.7 KB Created: 2021-07-03 17:22:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4c8cf84cfc4cdd97d37c0fbbb09dc15f SHA-1: 84870c5e125a96726120d51260f0ea01ca367ecb SHA-256: c38967280d44d73507b631e3d1584bd9993b590794f9f54ea0ef3b6e2e659f58
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'Coin Master Free Spin And Coin Link 2021 Today', which is a common tactic for phishing or scamming users. The primary heuristic identifies an external URI pointing to a 'game hack' redirector, strongly suggesting a malicious intent to redirect the user to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a social engineering attack.

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/406889139/coin-master-free-spin-and-coin-link-2021-today-game-hack PDF link annotation
    • http://perpus.fisip.unnur.ac.id/repository/free-to-be-lonely-roblox-id_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/transparent-shirt-template-roblox-free-shipping_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/robux-hack-2021-no-human-verification-code_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-full-brightness-hack_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-badges-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-dll-scripts-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/cheater-cheater-best-friend-eater-roblox-song-cide_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-https-rbxplace_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/ccv3-roblox-hack-tutorial_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/granny-roblox-free-money_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/hack-for-elemental-battleground-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-vehicle-simulator-cheat-money-cheat-engine_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off0000328f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328F 23020 bytes
SHA-256: b8c3d043307e492d092cce549c1e4cd79c20943f82dccedbda6f0c1b104cc187
font_01_sfnt_off0000662b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x662B 19100 bytes
SHA-256: 2fcbdb1e70df303aeff9bc276e1d0b6cbbe107abadb20612753ec7608fe6cc95

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