Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a7577799ab6d059…

MALICIOUS

PDF

43.1 KB Created: 2021-05-18 02:08:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5a7ae063d271a69c75997b02e2bb3134 SHA-1: c87376071480fb7fa86bcb1f0ecaa19aca70eac8 SHA-256: 3a7577799ab6d059d31ff26800b9de6808fe12d6431276fdedc0c90506388937
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded links and a visual download button, directly linking to a known malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. The primary attack pattern involves luring the user to download a potentially malicious application disguised as a game hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/hack-coin-master-apk-3.2-download-game-hack In PDF document text
    • http://sellitafrica.com/media/storage/editor/files/my-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox-adopt-me-hacks-2021_GM431946152.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_off000049ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49FF 25404 bytes
SHA-256: eb7fc0f4ad305cc4e9c564c4bff10499697c6f9bc7d839db68567504285beba7
font_01_sfnt_off00008421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8421 18836 bytes
SHA-256: d746a7c1c5cf5be311eddf8676cfb9402845d24e0d8fc8e00b27a1d9de62f851

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