Malicious PDF — malware analysis report

Static analysis result for SHA-256 27c8af06b2a2a281…

MALICIOUS

PDF

36.4 KB Created: 2021-05-21 02:19:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 69bbfa9d8de6a31f7a707e982b653c42 SHA-1: 01aa1a7616b1fcb5f5c9f281a7b6d31e704829b4 SHA-256: 27c8af06b2a2a281343dc1b98f7befbbd903e8de286a5ca51b0c0cfa806ed04e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, masquerading as a 'free generator' or 'game hack' to entice users. The primary URL, https://netcdn.xyz/app/835599320/how-to-get-tiktok-followers-for-free-game-hack, is flagged as a lure for such scams. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially malicious content, aligning with a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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.xyz/app/835599320/how-to-get-tiktok-followers-for-free-game-hack PDF link annotation
    • https://www.captaingogo.com/uploaded_files/userfiles/files/block-best-robux_GM431946152.pdfIn PDF document text
    • https://www.captaingogo.com/uploaded_files/userfiles/files/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.captaingogo.com/uploaded_files/userfiles/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://www.captaingogo.com/uploaded_files/userfiles/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://www.captaingogo.com/uploaded_files/userfiles/files/free-minecraft-skins_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
stream_002_off000032ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32AB 26788 bytes
SHA-256: 3990702ae129997140e64f82e43131fb63d6dd160fd47415b5a60ac9d99af160
font_01_sfnt_off00006eda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDA 17692 bytes
SHA-256: 4b02f20682cb4c08e6c2287e2a49d62ce276f528cc8f72393f75b4e02fd2d5a4