Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d9ace67c2c004c1…

MALICIOUS

PDF

35.2 KB Created: 2021-06-26 06:15:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8b4c70d43b5fd7c99f971009b227c763 SHA-1: f49b1f50ee46dee2ceb65fc19809cdb6d243c4c6 SHA-256: 9d9ace67c2c004c1f63e4974f56fb591b78ffb820063b79cce490c281324ae0a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a malicious lure, heavily utilizing a link farm to direct users to external sites offering game hacks and free spins. The ML classifier strongly indicated maliciousness, and the presence of numerous embedded URLs, including those related to 'roblox-hack' and 'coin-master-spins', suggests an attempt to trick users into downloading or visiting compromised resources. No scripts were extracted, but the document's structure and embedded links point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 http://netcdn.co/app/431946152/roblox-hack-free-no-human-verification-game-hack PDF link annotation
    • http://sttlets.education/senayan/repository/views-for-tiktok-free_GM835599320.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-for-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-fire-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/follow-bot-roblox-hack_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-free-spin_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/pokemon-go-free-joystick-android_GM1094591345.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-spins-coin-master-2021-glitch_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
font_00_sfnt_off00003205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3205 22144 bytes
SHA-256: 631dee29fa5b3ad829507e127636ef557d4b550e21a428128b29c510fe515912
font_01_sfnt_off00006325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6325 19580 bytes
SHA-256: eb01aebd9407c54f683e9333a71dd9ae26f6c0a70843523db13c11c022f61c5b

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