Malicious PDF — malware analysis report

Static analysis result for SHA-256 03dfda910c8228a5…

MALICIOUS

PDF

33.1 KB Created: 2021-07-19 15:37:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: acea198e18cce74c01e899a96d0f214e SHA-1: a3bcd016593dd8b63b9553092407eab8207e295b SHA-256: 03dfda910c8228a5aeeecac3dfa748b492396a679dc585a3df439342c7a109cd
160 Risk Score

Malware Insights

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

This PDF document employs a lure of free game items and hacks to entice users to click on embedded links. The primary link redirects to malicious infrastructure, which in turn hosts further lures and potentially malicious PDFs. The ML classifier strongly indicates maliciousness, and the document's structure suggests it's designed to exploit user interest in free in-game currency or cheats to lead them to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/406889139/free-spins-on-coin-master-game-hack In PDF document text
    • http://berntfoto.dk/images/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002be6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2BE6 23360 bytes
SHA-256: 0a3846792fdc59e318d8b214d6b17854fb8bb80afd5705acd729b8f915c3cc31
font_01_sfnt_off000060b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B1 17884 bytes
SHA-256: addbd5428a422ca7211e94293fed3a4f98c85d5f6337328d4d3623e90d90c649

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