Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d37cb7e79a23045…

MALICIOUS

PDF

48.1 KB Created: 2021-05-13 17:54:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 542634b2b2c3d793b56c90403c751f2e SHA-1: ba8c2e17dfeca630c39846bbe594ed20b87fdb8b SHA-256: 3d37cb7e79a2304517f340fdf8e692273a22a74878c4cedfcf64e4476777ca12
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-get-free-roblox-money-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow, likely intended to lead users to further malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/how-to-get-free-roblox-money-game-hack In PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/robuxglobalcom_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.aevasia.com/uploaded_files/userfiles/files/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004981.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4981 28176 bytes
SHA-256: 6de74bed9f8ab9f85faa94382a28c690ac0f5fc341e79a0b8fcd25edbcefa032
font_01_sfnt_off00008b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B04 4204 bytes
SHA-256: a7f4629f4e1feb8e888873802d50d717e1b6f368619d281f7b894eb64d7797f0
font_02_sfnt_off000098b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98B7 18592 bytes
SHA-256: b73f1f0d33754a6311a400e0f9b7fa1bed8423beec91854f27c9eb8add8b4fcc

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