PDF malware analysis — malicious · 63da5ae827c6c276

MALICIOUS

PDF

34.3 KB Created: 2021-07-19 15:51:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: ab8ddf51fdd3894662cb32202cac5334 SHA-1: f12f3ff1c178d9bdc1b249d4091d587c20463e72 SHA-256: 63da5ae827c6c276d60c76a73285af8a090e4b8f63ec8fe90aab8a48955ab1c1

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors that masquerade as free game hacks and generators, aiming to lure users into malicious sites. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous links to known malicious infrastructure confirms a high likelihood of a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded links indicate it serves as a lure for further malicious activity.

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/479516143/minecraft-free-download-android-game-hack In PDF document text
- http://esm-royet.de/images/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
- http://esm-royet.de/images/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
- http://esm-royet.de/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://esm-royet.de/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
- http://esm-royet.de/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
- http://esm-royet.de/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
- http://esm-royet.de/images/coin-master-hack_GM406889139.pdfIn PDF document text
- http://esm-royet.de/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
- http://esm-royet.de/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
- http://esm-royet.de/images/free-robux-games-that-actually-work_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
`font_00_sfnt_off000030d3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30D3	22876 bytes
SHA-256: `4d7e2ad500f53b7133fa1b1b7da6759ceee70d2d75fe49d1862d8a485c2418a8`
`font_01_sfnt_off00006410.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6410	18292 bytes
SHA-256: `9d9b0ee832c8ed03a3e8d039feca9f5c484872876758be0788389d8bcd5131f0`

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