Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c70bb4c525c58d…

MALICIOUS

PDF

44.7 KB Created: 2021-06-08 23:56:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f3c0b7a801dc649115f91d60464b6d63 SHA-1: 11c6b0ee1206e2c05cd24b9117443f0fdb7d36bf SHA-256: 58c70bb4c525c58d53165104207e22fbfc9f91ddc671dec314a873327eaf1d95
62 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and a heuristic firing for external URIs, indicating it is designed to redirect users to malicious content. The document body, though partially corrupted, suggests a lure related to game hacks, specifically for Roblox. The presence of multiple URLs pointing to potentially malicious repositories reinforces the intent to deliver a harmful payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/roblox-jailbreak-hack-client-we-are-devs-game-hack PDF link annotation
    • http://183.91.70.7/repository/free-shirt-templates-roblox_GM431946152.pdfPDF link annotation
    • http://183.91.70.7/repository/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/what-is-the-fastest-way-to-get-xp-in-pokemon-go_GM1094591345.pdfIn PDF document text
    • http://183.91.70.7/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/picture-roblox_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/lazy-blocks-com-free-robux_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
stream_004_off00004e2b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E2B 25728 bytes
SHA-256: 1159e3e7a85c99ee447a28569123ba1c84c0f97eddee17b409b1db8227c772ba
font_01_sfnt_off000089bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89BD 19052 bytes
SHA-256: 87d71a896d843bddc432dd410bb3481373eeab90f2e08317523bf74c923dac79

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