Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e12329ed6677528…

MALICIOUS

PDF

47.9 KB Created: 2021-06-03 16:32:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: a80146ee8ba40ac066791afc296358b5 SHA-1: ce328548b6679c58fe5defa3dac47fb89f6f474e SHA-256: 1e12329ed6677528299fdcffcbd0235712fbf824f13da913b7a8e483e68ff53b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically luring users with promises of game hacks. The primary URL identified, https://netcdn.online/app/479516143/how-to-get-minecraft-bedrock-edition-for-free-game-hack, is associated with this lure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or redirection attempt to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/479516143/how-to-get-minecraft-bedrock-edition-for-free-game-hack In PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/pubg-uc-live_GM1330123889.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/pubg-uc-rate_GM1330123889.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-hack-download-apk_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
font_00_sfnt_off0000543c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x543C 25320 bytes
SHA-256: 568d287684080038c04384e166428e68abf39dd22bbe40b327a9e564c9933a9a
font_01_sfnt_off00008d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D75 3092 bytes
SHA-256: 3811f2fb1880daf4953efcc9c7427d9b438bced237490b00be4a6ec3ecea79e0
font_02_sfnt_off00009820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9820 18436 bytes
SHA-256: 3a0999d30397def23c47b5d80e97d9b0f28df4cbffb45a09cf4ec0f6b7597619

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