Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cccf5555fe51c76…

MALICIOUS

PDF

50.3 KB Created: 2021-06-03 16:14:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 207055f75d933f2457b34bb92806a798 SHA-1: d3513c816f61145f6aca995e2ac51d8fa072679a SHA-256: 0cccf5555fe51c766209fa0feae9d0c7a62258046238798c1ff23163588d4b4c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to a known malicious redirector infrastructure associated with game hacks and free spins. The document body and embedded URLs suggest a social engineering lure to entice users to click on these links, likely leading to further malicious content or downloads. No scripts were extracted, but the presence of malicious links and the lure indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9734

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/406889139/coin-master-free-spins-hack-ios-game-hack In PDF document text
    • https://www.andrology.co.uk/uploads/files/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/pokemon-go-free-raid-pass_GM1094591345.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/robux-only_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/roblox-premium-free_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f90.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F90 25584 bytes
SHA-256: f3fa447746d5f1608e6b65dc5d0d63d2f89ccebbf0bdccf3e64f5771e286e8ec
font_01_sfnt_off00008af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF6 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off00009897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9897 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off0000a287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA287 18056 bytes
SHA-256: cf09809f84b3ac791db74d1bb07130b21cb8066fa4ad9e5b41b3fe91ed893d5a