Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c28f9efd322dd6e…

MALICIOUS

PDF

41.8 KB Created: 2021-05-16 08:49:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5efe40908996805233850e5aa4fe9549 SHA-1: c193ef4819fc0687cca494e30d231d8aa25e5d55 SHA-256: 8c28f9efd322dd6e089e7c362a5767a15a3630631b07a5627c78838d33fb798a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The document body and heuristics indicate a clear intent to trick users into visiting these malicious sites, likely as a first step in a phishing or malware distribution chain. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a malicious redirection workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-roblox-generator-game-hack In PDF document text
    • http://1a-vermietung.com/images/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://1a-vermietung.com/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://1a-vermietung.com/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://1a-vermietung.com/images/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://1a-vermietung.com/images/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://1a-vermietung.com/images/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://1a-vermietung.com/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://1a-vermietung.com/images/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://1a-vermietung.com/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://1a-vermietung.com/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://1a-vermietung.com/images/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://1a-vermietung.com/images/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://1a-vermietung.com/images/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://1a-vermietung.com/images/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://1a-vermietung.com/images/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://1a-vermietung.com/images/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://1a-vermietung.com/images/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://1a-vermietung.com/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://1a-vermietung.com/images/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://1a-vermietung.com/images/how-to-get-gold-cards-on-coin-master-hack_GM406889139.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
font_00_sfnt_off00004881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4881 24604 bytes
SHA-256: 89bfeb537beb93d25ee0dd75795977c2c77df4600b687885b52675532e9e3d47
font_01_sfnt_off000080e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E5 18280 bytes
SHA-256: a933d21998376b1e1789d4c480c6983ef3f135197d1bc74c37b8b8f8713ff5e6

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