Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebae8bf5c1960455…

MALICIOUS

PDF

40.6 KB Created: 2021-05-18 05:01:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a7d3e08ec7e29733401beea1b2e7d512 SHA-1: f55240cfdcf33ab497a85cbeb43870f3b3e93107 SHA-256: ebae8bf5c1960455bcfd88b2dd13ce1111808619e84c0fd593a5887b7510ee73
210 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to a malicious redirector masquerading as a game hack generator. It also displays a fake CAPTCHA and impersonates Facebook to phish for credentials. The embedded URL is the primary indicator of malicious activity, suggesting a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

Heuristics 6

  • 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
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/archery-master-3d-coins-hack-game-hack.
  • 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/archery-master-3d-coins-hack-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003407.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3407 27104 bytes
SHA-256: f5246e77d7033a19b6950327a07c16a5838dd7eb7399970d41c04b134c602ee9
font_01_sfnt_off000072cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CF 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00007cb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB9 18412 bytes
SHA-256: f9cf812304e57e70013e0f84406ecfa39ec6b4f3fd744d347e315cc49b96dd9e

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