Malicious PDF — malware analysis report

Static analysis result for SHA-256 266d4c09c610357a…

MALICIOUS

PDF

43.5 KB Created: 2021-05-18 00:31:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 16c5e7971158cec38868ed1a3fc58713 SHA-1: 8c8a8158350b30c8399e1ad53a3661471aa81dbf SHA-256: 266d4c09c610357a6c8988b7cffc7ca99314836f308932086a54447607b5a604
100 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that the target URL is associated with known malicious redirectors. The presence of a visual download button lure further supports the malicious intent of tricking users into clicking the link. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 3

  • 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/minecraft-hacks-1.8-9-game-hack In PDF document text
    • https://vstarnippers.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/robux-free-com_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/freerubux_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c2e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C2E 26492 bytes
SHA-256: 19869e05d98b939bd21d7911aa32a8863f82a54532bf1e08ea8dc0b7c111d4b0
font_01_sfnt_off000087fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87FB 18284 bytes
SHA-256: cc1afa3f9e5bafff3439a24eb4e00371cb949553c5e41947bccc849ebc804b61

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