Malicious PDF — malware analysis report

Static analysis result for SHA-256 41374afb0cab17b2…

MALICIOUS

PDF

46.3 KB Created: 2021-06-11 13:01:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f90c03a9d428df1aad4122701be9cabb SHA-1: 91e810719f633f19eb17889ba1b6a024e0f96d6f SHA-256: 41374afb0cab17b239eefd259978faeb57278bccc531c3298e06c64a8ad99136
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a document body that explicitly promises game cheats and hacks, aiming to trick users into downloading malicious files. The presence of external URIs and an IP literal URL indicates an attempt to redirect the user to malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/how-to-hack-roblox-wanted-game-hack PDF link annotation
    • http://183.91.70.11/repository/roblox-highschool-money-cheat_GM431946152.pdfPDF link annotation
    • http://183.91.70.11/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/free-roblox-gift-card-redeem-codes_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/roblox-hack-how-to-get-evrything-free-on-catalog_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/hack-roblox-dragon-ball-online_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/roblox-hack-asshurt_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://183.91.70.11/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-hack-free-spins_GM406889139.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_off00005155.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5155 27444 bytes
SHA-256: 6b43b19215c1ed9847e76d4d0fa1c209baab9812d58dd72ff2176f89fe55bb62
font_01_sfnt_off00009098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9098 18824 bytes
SHA-256: a8f7ad417fac8b49de3f7a7462ea00100408517c485d32affe1f65ea0d40b57d