Malicious PDF — malware analysis report

Static analysis result for SHA-256 50aff9617178882c…

MALICIOUS

PDF

33.7 KB Created: 2021-06-19 15:56:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 197c259217bad05c3ab02aeafa24c072 SHA-1: 393591dcafd81c8fec0c95a1bbaac8cf283935eb SHA-256: 50aff9617178882c486b2693eabb8028cceb38a075920e5ec79cc58718d02d56
100 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising game hacks and cheats for Roblox. The ML classifier and the malicious redirector heuristic strongly indicate malicious intent. The document body and extracted URLs suggest a lure to download potentially unwanted or malicious software disguised as game cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.co/app/431946152/cheat.otg-roblox-game-hack In PDF document text
    • http://vagency.us/images/how-to-get-free-robux-5-steps_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/cheat-robux-cheat-engine_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/fast-robux-free_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://vagency.us/images/flob-fun-roblox-hacker-generator_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/how-to-get-free-robux-without-going-on-roblox_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/can-cheat-engine-get-you-banned-roblox_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/how-to-get-hacks-on-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/how-get-new-outfit-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/how-to-get-free-robux-no-human-verification-mobile_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/free-cloth-on-roblox_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/free-robux-claim_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/como-hackear-cuentas-de-roblox-100-real_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00002d70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D70 22380 bytes
SHA-256: 47b0e4409f785179cdd495ddb4b1f1c4e2360c51359de65a4102cee405afc331
font_01_sfnt_off00005f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5D 18824 bytes
SHA-256: b02f818fc0cfdef2d28c984bbdf9bb99937c889f9aeb500e41f9cab15d68e990

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