Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7ea6d06ce476a7f…

MALICIOUS

PDF

34.9 KB Created: 2021-07-07 21:54:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 740b6d964a0ccbd0112c3182e06a24c3 SHA-1: 9fa0ae1d43efe50db06d59cc2aac1ad42ab23900 SHA-256: e7ea6d06ce476a7fc97b3c8df1016c68fe28690c7632eb4d4d2db3d5b2efadbd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'free robux'. The document body and heuristics indicate a lure to a redirector hosted on netcdn.tw, which is associated with malicious activity. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/games-for-robux-game-hack In PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/roblox-hack-cf_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/roblox-c9m_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/roblox-sand-simulator-hack-for-android-2021_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/robux-for-free-for-robloxcom-mobile4free24com_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/robux-robux_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/roblox-song-id-billie-elish-free_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/noto-clip-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/roblox-svg-free_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-roblox-meme_GM431946152.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
font_00_sfnt_off00003131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3131 22408 bytes
SHA-256: fcd71f7c5e1edc9be66b0221de169f76947a30b517645a924ef8a87fdf4780cf
font_01_sfnt_off00006384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6384 18976 bytes
SHA-256: 090ea4c6042fee042727c6b8a892a5a58e907418997767bf433bab9fde8fbe7f

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