Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bb0e186fd9da361…

MALICIOUS

PDF

42.2 KB Created: 2021-05-17 18:24:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f422dfba218af1bf18110f170d390a79 SHA-1: 6da49a193bc22b50feb0af597e48bf2da9c40214 SHA-256: 6bb0e186fd9da361e4e68df1a71d3afa243c388f9d3dea222c343df5720b81c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically advertising "free generator / game hack" lures. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the embedded URLs and the nature of the lures strongly suggest a phishing or malware distribution attempt.

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/406889139/coin-master-village-4-game-hack In PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/collect-robux_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/master-coin-hack-app_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/roblox-font-free_GM431946152.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b02.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B02 24640 bytes
SHA-256: 5e17d21095624a258a0f83aa0dda274d34c8f22098031cb7bf7712c5f3a610e3
font_01_sfnt_off000082df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DF 18104 bytes
SHA-256: b0d319d02d5f6fe8d57e7f6ebb50a6e3f32c9d8795d35119bf82678c9a6285e2

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