Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea05496e751af1bc…

MALICIOUS

PDF

44.9 KB Created: 2021-05-25 07:03:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f47ef890be4d7cc825d72f92518c6dbe SHA-1: 0224edd7f8837683e4ca9b7e93e0bf849f559c65 SHA-256: ea05496e751af1bcb8afab3fb2168e745848d7bbecebbf3cb02fcd98b652f914
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising a 'free Robux generator' or 'game hack'. The document body and heuristics indicate a lure to a malicious redirector, likely intended to deliver a secondary payload or phish for credentials. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7481

Heuristics 4

  • 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.
  • 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/431946152/blox-land-free-robux-game-hack In PDF document text
    • http://amcoeur.org/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://amcoeur.org/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/lazyblox-com-free-robux_GM431946152.pdfIn 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_002_off0000343f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x343F 30812 bytes
SHA-256: e43ab7bc36a37c218ff2b8701d061779484dd618384d5f01b974d0c089894187
font_01_sfnt_off00007bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCC 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_02_sfnt_off00008dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAE 18492 bytes
SHA-256: 43325585731fb5abef9629b4ee3027de7c41cdd34c16702b82f5d396e8a55598

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