Malicious PDF — malware analysis report

Static analysis result for SHA-256 d63a2049c9a3abb5…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 05:45:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fcb9b9ace86c39cd7dfe1bf06178efeb SHA-1: 44cebe51d83af48fc503f38deae93fcc3ec7de3b SHA-256: d63a2049c9a3abb5517fa4b1042b29cf658aa8ecc942cc274ef78f2eaab6c53f
162 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a ClickFix paste-and-run lure and a clipboard-command (paste-and-run) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 6

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.online/app/431946152/get-robux-for-free-2021-game-hack PDF link annotation
    • https://esl.hess.com.tw/image/data/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/coin-spin_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/roblox-moderators_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/coins-master-hacks_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/how-do-you-get-free-roblox-money_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_off0000503c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x503C 25188 bytes
SHA-256: 016a872c458a4d050e95266349a704889dfc3a551ab16e3c795d7b0faef4375b
font_01_sfnt_off00008a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A98 18520 bytes
SHA-256: e088d92b388561e3a46dc194d915539325ab46261f90c1147848fe102ee4ee2d

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