Malicious PDF — malware analysis report

Static analysis result for SHA-256 08640f34064c13d9…

MALICIOUS

PDF

42.3 KB Created: 2021-05-14 13:08:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aa6cc994edb849e242839b8b60df74d7 SHA-1: 7a12def516953d7a371ec4e0b0ff939adfc017c1 SHA-256: 08640f34064c13d935e60e74588ab525e52882085753992bcc1c66f2371695f9
160 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it links to malicious redirectors and is designed as a lure for game hacks or free currency. The document body explicitly contains the URL 'https://netcdn.xyz/app/431946152/where-to-get-free-robux-game-hack', which is also listed as a target URL for malicious redirector links. The presence of embedded URLs and the ML classifier further support its malicious nature.

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/where-to-get-free-robux-game-hack In PDF document text
    • http://skwolcott.com/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://skwolcott.com/images/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://skwolcott.com/images/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • http://skwolcott.com/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://skwolcott.com/images/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://skwolcott.com/images/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://skwolcott.com/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://skwolcott.com/images/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://skwolcott.com/images/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://skwolcott.com/images/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • http://skwolcott.com/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://skwolcott.com/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://skwolcott.com/images/www-rubux_GM431946152.pdfIn PDF document text
    • http://skwolcott.com/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://skwolcott.com/images/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://skwolcott.com/images/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://skwolcott.com/images/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • http://skwolcott.com/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://skwolcott.com/images/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • http://skwolcott.com/images/coin-master-hack-tool-access-online-generator_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
stream_003_off000048c3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C3 24940 bytes
SHA-256: f43dba827ee9c71ca36b4872d1086139a27ee0ba3971098c5d01a91d37f82e41
font_01_sfnt_off00008282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8282 18484 bytes
SHA-256: fb52c80d186d334eb1da06902c7e87ffbc7c7b48a2b49bbb6429fdd2e0d05906

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