Malicious PDF — malware analysis report

Static analysis result for SHA-256 f107bb9e1753eb42…

MALICIOUS

PDF

40.0 KB Created: 2021-05-23 05:33:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a4f6f2c39429fd5c8479d6825f41cb05 SHA-1: ed245c7ef7ab9152db0a8df1a1ab4c73c4fad0eb SHA-256: f107bb9e1753eb4228e05469688b11dbaedb68229bf2e8b6f03a3503031e4f94
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8068

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/479516143/free-modded-minecraft-server-hosting-game-hack PDF link annotation
    • https://wenshan.com.tw/upload/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000366e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x366E 25740 bytes
SHA-256: 0be43b0a6da8170197c7b963205f0c239c72e76d6667430f73d19983956df077
font_01_sfnt_off00007121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7121 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00007ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC0 18284 bytes
SHA-256: 4ae19380f71872a59bca81a6826a2f1ac99dae3e110f9987d961b4518a9677d8

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