Malicious PDF — malware analysis report

Static analysis result for SHA-256 af11130f252a6964…

MALICIOUS

PDF

33.4 KB Created: 2021-07-19 11:31:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 1ee48abb4b282bbb8259105f345b3143 SHA-1: f48af3d4c0aff2653d0a72f33093a5be45b1be2c SHA-256: af11130f252a69647e2c5818cd2709b0788aff18a0d9032bcb2971683bd4928a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to redirector infrastructure and potentially malicious websites, masquerading as "free game hacks" or "generators." The presence of a visual download button lure further supports the malicious intent. While no scripts were directly extracted, the PDF structure and embedded links suggest a social engineering tactic to drive users to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/479516143/how-to-get-minecraft-for-free-ios-game-hack In PDF document text
    • http://agritrade-ukraine.com/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-robux-codes-generator_GM431946152.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_off00002f5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5F 22704 bytes
SHA-256: 2f0989e316409a33e87c95e3ef9728e92fac2a450871fde69acc5a5f7c16316c
font_01_sfnt_off000061d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D9 17872 bytes
SHA-256: f310131035db742f338f230ab2c5697c5d59cc25d8943e3e3339342bb09010ba

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