Malicious PDF — malware analysis report

Static analysis result for SHA-256 034cfee8bf46f9e7…

MALICIOUS

PDF

32.8 KB Created: 2021-06-18 05:02:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 91f5d2cf814d152e6d009e1968ebf6a2 SHA-1: c93cf36363490729e53a388bd635e3ea7d51d962 SHA-256: 034cfee8bf46f9e7c59f3da3d0886a1e48ae95c9fe9a4d9b6e1804c494a97f37
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple external links, including one to 'netcdn.co', which is flagged as a lure for game hacks and redirects. The document body and heuristics indicate a social engineering attempt to trick users into clicking these links, likely leading to malware download or credential harvesting. No scripts were extracted from this sample, but the embedded URLs and the 'game hack' lure strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/free-money-logo-roblox-game-hack PDF link annotation
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-free-t-shirts-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-phantom-forces-hack-2021-script-executor_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-online-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-mask-on-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/tiktok-free-package_GM835599320.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-shirt-templates-on-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/get-free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-spin-coin-master-link-download_GM406889139.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
stream_001_off00002b16.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2B16 21864 bytes
SHA-256: 1e9b12f4847dfacd9bccdab2516991566c9b09e6820075051a387b8b02fc2fac
font_01_sfnt_off00005b63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B63 19028 bytes
SHA-256: 80aec601a21b90fd49bbb6cb12b50a06b09f1a2f8170c9f15552802517156f93

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