Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86bd6009b0301f9…

MALICIOUS

PDF

33.8 KB Created: 2021-07-19 09:01:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ea1d51c7e5da791a74f97f440faba434 SHA-1: bcf988aa6b8d32e9972243a4f45d7f03d4acbcb0 SHA-256: a86bd6009b0301f98d7bc1538dded7deb710ec28d8c9762de5c053137a06eee6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, masquerading as game hacks and generators. The primary lure directs users to 'http://netcdn.tw/app/406889139/free-spins-coin-master-blogspot-game-hack', likely to download a second-stage payload. The document body also contains a call-to-action phrase, reinforcing the deceptive nature of the content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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/406889139/free-spins-coin-master-blogspot-game-hack In PDF document text
    • http://fairwaygolftravel.co.uk/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://fairwaygolftravel.co.uk/images/minecraft-dungeons-free-download_GM479516143.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
font_00_sfnt_off00002c02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C02 23636 bytes
SHA-256: 3bcdb4fd43ac4d5f16c36e7784b0151bf015e9fa9b924c34fea494d2c3ee341f
font_01_sfnt_off000061b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B2 18464 bytes
SHA-256: 1c6dfc1f98a6641c171a543c2046344b7d819ff3e085ab3ae56c0ac3320f4f50

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