Malicious PDF — malware analysis report

Static analysis result for SHA-256 29300dc6b974b2e3…

MALICIOUS

PDF

35.5 KB Created: 2021-05-10 19:08:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a7deef2b42765dcf7b87eb80be288eaa SHA-1: d4de892e87c878b4a26c1be948d0d65038aa4692 SHA-256: 29300dc6b974b2e3aed33aff2d28023017646607652a0e8dbcf58dc3e311a867
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1071.001 Web Protocols

The PDF document contains a lure for a "free generator" and displays a fake CAPTCHA, aiming to trick the user into clicking a malicious link. This link redirects to infrastructure known for malicious activity. The document body text and heuristics indicate a social engineering tactic to drive user interaction towards a potentially harmful outcome.

Machine Learning

  • Nyx PDF Classifier clean score 0.0306

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/hack-coin-master-with-lucky-patcher-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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
stream_003_off000030be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30BE 24328 bytes
SHA-256: b00249ed5492c49df008c23055ca7983eee1ba0dc09a43276da7766f7146316d
font_01_sfnt_off00006894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6894 18552 bytes
SHA-256: 2ef819c75b3a0e1f10814af5d5822ed8fdf4a5514fe4edddd3d35c731c38b399

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