Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ba91939a49019b…

MALICIOUS

PDF

42.5 KB Created: 2021-05-11 22:22:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1e0bd92970115cbcaa402870baa6daed SHA-1: bea68b4ac96933500c519af0d7f443a8cdc65261 SHA-256: 87ba91939a49019bdbb5fb78e67229cc221285d13e42e7d28a001b1110a11895
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document exhibits characteristics of a ClickFix social engineering attack, instructing the user to execute a command or click a link. The embedded URL and numerous other URLs point to sites offering free game currency or cheats, indicating a lure to download a secondary payload. No scripts were extracted, but the presence of external URIs and social engineering tactics strongly suggests a malicious intent to trick the user into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.xyz/app/479516143/is-minecraft-vr-free-game-hack
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-free-spins-without-human-verification_GM406889139.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/free-robux-generator-without-human-verification_GM431946152.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/free-roblox-card_GM431946152.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/lastrick-com-coin-master-hack_GM406889139.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/microsoft-rewards-roblox_GM431946152.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-free-link-spin_GM406889139.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/how-do-we-get-free-robux_GM431946152.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/what-do-points-do-in-roblox_GM431946152.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/minecraft-mods-download-free_GM479516143.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/free-robux-without-verification-or-survey_GM431946152.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-hack-no-verification_GM406889139.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-hack-quora_GM406889139.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/roblox-hack-ios_GM431946152.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/woman-roblox_GM431946152.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/free-group-roblox_GM431946152.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/roblox-demon_GM431946152.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-free-spins-link-download-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cba.bin
5fff441946eb54708d949195f00e11e77c852d07cc03bac3c2390e13d6fdd7fe
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CBA 24980 bytes
font_01_sfnt_off000085be.bin
8bb0636472a21c77c03eb179316ec7672ebaf2fffc2d381e43d3ff9b7c84c5d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x85BE 17704 bytes