PDF malware analysis — malicious · 56ecffd489c48e55

MALICIOUS

PDF

34.0 KB Created: 2021-07-25 02:34:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 2a6da09c040eda9fd379376df25f4db5 SHA-1: c0db7f8b401ffc486579fecf0edf92e1c48f28ae SHA-256: 56ecffd489c48e55cf9f290c0a1fadd31d7103d37cecb35b5db000c6faf49852

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically a 'free generator / game hack' lure. The ML classifier also flagged this PDF as malicious. The document body contains a call to action to 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', reinforcing the lure. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

Machine Learning

Nyx PDF Classifier malicious score 0.9955

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-coin-master-2021-game-hack In PDF document text
- https://www.milewood.co.uk/images/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
- https://www.milewood.co.uk/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
- https://www.milewood.co.uk/images/minecraft-free-app_GM479516143.pdfIn PDF document text
- https://www.milewood.co.uk/images/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
- https://www.milewood.co.uk/images/minecraft-account-hacked_GM479516143.pdfIn PDF document text
- https://www.milewood.co.uk/images/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
- https://www.milewood.co.uk/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://www.milewood.co.uk/images/free-robux-codes_GM431946152.pdfIn PDF document text
- https://www.milewood.co.uk/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
- https://www.milewood.co.uk/images/free-robux-no-verify_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.

Filename	Kind	Source	Size
`stream_002_off00002c58.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2C58	23864 bytes
SHA-256: `fa3eef8b2e6395e420d3d6997c1b2bdd7bd0891154c1aa687bbbe97bb8eb846e`
`font_01_sfnt_off000062bc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62BC	18288 bytes
SHA-256: `9732707b45c862b7a6ef8ea2418900def9be3650c6b325207d932644f64622ad`

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