Malicious PDF — malware analysis report

Static analysis result for SHA-256 08783f6b57d00716…

MALICIOUS

PDF

46.3 KB Created: 2021-06-03 06:34:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 966248a2457b4f494147c2cb8fe701d3 SHA-1: 7be8d4388689cf7be6f5587758cad0f2b01f74bb SHA-256: 08783f6b57d00716778417163a248b11651df4aa7594d5f9314ae2266bab1451
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as 'game hacks' and 'generators'. The primary URL, https://netcdn.online/app/431946152/how-to-make-a-roblox-hack-using-hxd-game-hack, is directly associated with malicious redirection. The document body, though partially garbled, contains references to these lures and additional URLs hosted on ugericabs.com, suggesting a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.online/app/431946152/how-to-make-a-roblox-hack-using-hxd-game-hack In PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/instagram-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.ugericabs.com/uploaded_files/userfiles/files/free-spin-coin-master-online_GM406889139.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_004_off000052b3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52B3 26336 bytes
SHA-256: 1fdec72dea163d6ffa66aea9c16448aacbbbfdc716172537efc78a68e118c627
font_01_sfnt_off00008f78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F78 19312 bytes
SHA-256: 80b5b59fb4b6cddddb6271c341422a840fb5c8896a3d0c05c9fa32ccbe0dbd44

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