Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a969280b95e5f5f…

MALICIOUS

PDF

36.2 KB Created: 2021-05-23 08:41:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 01b291840c9b1df6cf900e1240d1d9a3 SHA-1: 0e18473b6a0b637c8320a44d7e405a1c6b786a5a SHA-256: 9a969280b95e5f5f9d9e6b2c0fb3a14cbe60b2d0a9e819b9f617381ab306021f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links disguised as free game hacks and generators, directing users to malicious redirector infrastructure. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in free items to redirect them to potentially harmful content, likely leading to further exploitation or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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.xyz/app/479516143/free-minecraft-survival-server-game-hack In PDF document text
    • https://pemadamapi.net/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pemadamapi.net/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pemadamapi.net/images/free-robux-instantly_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_off00003453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3453 25136 bytes
SHA-256: b8f00761140affeabdb251bdf4a76680d20beb11a39c000bc51d42c679465d46
font_01_sfnt_off00006d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5A 17896 bytes
SHA-256: a416ee995e2fcdad104e8f08570a8c057a7877f0093c65a8eab662d227b30cb8

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