Malicious PDF — malware analysis report

Static analysis result for SHA-256 558d3bd9202c5686…

MALICIOUS

PDF

46.7 KB Created: 2021-06-11 13:08:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a3d9221c9414c5795afde2a095d632fe SHA-1: a227a959e2749cdd0d056ffec53584ee8c582cb6 SHA-256: 558d3bd9202c56867d3f64aeeccd5bee854730cfe4975869edeb5068d5b5f553
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a malicious redirector link disguised as a lure for game hacking information. The ML classifier also flagged it as malicious. The document body and embedded links suggest an attempt to trick the user into downloading a malicious file from the provided URL, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/how-to-hack-someone In PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-free-draw-2_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-spamming-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-attack-link_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-items_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-without-human-verification_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_off000053fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53FD 26932 bytes
SHA-256: 1c526158d921b0a68d1c8263804b12b85e645da43dcab7ab95e7583e5770e105
font_01_sfnt_off000091c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91C0 19120 bytes
SHA-256: 47c3bc0357bda6963b7ee4afa1ac7c7116cd13f445b6464bff60682f1445a8da

Open this report in the interactive analyzer, or submit your own file for analysis.