Malicious PDF — malware analysis report

Static analysis result for SHA-256 76e60d2e45eac386…

MALICIOUS

PDF

40.3 KB Created: 2021-05-10 11:45:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 736a0eb8be8f473e07d232233fe13c7e SHA-1: c0048b98a13b4082f8f11c97a638782455a42a76 SHA-256: 76e60d2e45eac3864bab9c8ab80b3cfe3699f6ffe74f4116e2efded9b341ead1
92 Risk Score

Malware Insights

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

The PDF file contains a high-confidence heuristic indicating it's a lure for a 'game hack' generator, directing users to a suspicious URL. The document body also contains text related to hacking game coins and a prominent "CLICK HERE TO ACCESS COIN MASTER GENERATOR" call to action, reinforcing the phishing attempt. While no scripts were directly extracted, the nature of the lure suggests it's designed to trick users into executing further malicious content or visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/406889139/how-to-hack-coins-in-archery-master-3d-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003712.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3712 25152 bytes
SHA-256: 6043232b79bb4d54edaa84b79aada5062caab39dffa40352fa61c79c5b961832
font_01_sfnt_off0000713d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x713D 2868 bytes
SHA-256: d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
font_02_sfnt_off00007b27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B27 18572 bytes
SHA-256: 4500fe29ddf1d7d9300f1962a48dd2bba7805d525d10eea9ff3dae6e1a1b44ac

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