Malicious PDF — malware analysis report

Static analysis result for SHA-256 5616b3eadc4d519a…

MALICIOUS

PDF

43.5 KB Created: 2021-05-14 04:53:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d70e294379137b6212dc7818b0edef2d SHA-1: 583618b4f69103d9cc5bb1be25a4420e072f503c SHA-256: 5616b3eadc4d519a16f794188f52d3206c555e1d4f1177fb6218f8210f33e9a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and in-game currency to entice users. It contains multiple embedded URLs that lead to known malicious redirector infrastructure, specifically pointing to 'free generator' sites. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple redirector links reinforces the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/minecraft-java-edition-code-free-game-hack In PDF document text
    • http://muko-unterfranken.info/images/whats-robux_GM431946152.pdfIn PDF document text
    • http://muko-unterfranken.info/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://muko-unterfranken.info/images/master-coin-hack_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://muko-unterfranken.info/images/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://muko-unterfranken.info/images/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/coin-master-hack-app-android-download_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://muko-unterfranken.info/images/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://muko-unterfranken.info/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ded.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DED 25480 bytes
SHA-256: 4d1badb8fc951deec1ea8e8623d0ed93102251e79d282ff029f52ed2a0182ac3
font_01_sfnt_off0000881a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x881A 18164 bytes
SHA-256: f60a0ad92d00317e2c15f806bb6b4e732b7ddb4bf4afc6afb4b51f1f749874bc

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