Malicious PDF — malware analysis report

Static analysis result for SHA-256 457a2987e9f4628c…

MALICIOUS

PDF

34.9 KB Created: 2021-06-25 11:19:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 639a9fbc1b57048a3c34b2552297f794 SHA-1: 0324430b8a369e46a9517fcfbc6f30020ee9392d SHA-256: 457a2987e9f4628c2b2dd207c5029a39e3cb5cee13dc7798042ac0872438e443
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that lure users into downloading free items for popular games, such as Roblox and Coin Master. One of the embedded URLs, http://netcdn.co/app/431946152/snape's-free-download-roblox-game-hack, is flagged as a known malicious redirector. The document's structure and content suggest it is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/snape In PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/coin-master-free-coins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/free-roblox-ad_GM431946152.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/how-to-hack-roblox-no-files-trackid-sp006_GM431946152.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/get-robux-today_GM431946152.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/roblox-jailbreak-hackfree-unlimited-money-cheats_GM431946152.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.stileadda.com/uploaded_files/userfiles/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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
font_00_sfnt_off00002ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE9 22828 bytes
SHA-256: 2cb604d2632aec9592a43e41f1b0c127fa5fb98569969d59809011160981cdb9
font_01_sfnt_off0000620c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620C 19396 bytes
SHA-256: 978c9a87c81b33e92948d1be7c33956fb2cc8e7430a714102665a47c23903144

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