Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b0905fab329a6b9…

MALICIOUS

PDF

48.9 KB Created: 2021-06-09 14:53:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1cf8099f9afbff1f862efb36ad439282 SHA-1: cf239aa3e6ab429c47e6d4711849e405c69f0b49 SHA-256: 0b0905fab329a6b980633e5f9ce68248835e8a67a26885353224bf998d5260f5
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, which is designed to lure users into downloading potentially harmful files. The document body and embedded links suggest a lure related to game hacks or cheats, indicating a social engineering tactic to trick users into clicking the malicious link. No scripts were extracted, but the presence of a malicious redirector and the nature of the lure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/he In PDF document text
    • http://elibrary.perludem.org//repository/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/earnblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robux-offers_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hacking-my-best-friends-roblox-account_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000529c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x529C 24928 bytes
SHA-256: 407b15160a75512eebdf1124bf9c5463728acd6716efab1a7a6e592c78fb9167
font_01_sfnt_off00008c25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C25 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off000098cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98CC 19504 bytes
SHA-256: 9a69e28fbbe16e54dc9dac919b6377721a1dd144a2f05f0a6e5def44b3a78bf3

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