Malicious PDF — malware analysis report

Static analysis result for SHA-256 07570348a11348ad…

MALICIOUS

PDF

44.1 KB Created: 2021-05-16 09:32:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 797dad15a62fe7539c19dbbbe18e0921 SHA-1: 17ac8e0bea009516754c9edf201ab852dfd48f2c SHA-256: 07570348a11348adbf1c83e3167e9ec907ebf9cffdb804a2891eb526b43227fa
82 Risk Score

Malware Insights

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

This PDF document contains a lure for free Robux, impersonating Microsoft to encourage users to click a malicious link. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs and a call-to-action button reinforces the phishing and potential malware delivery intent. No scripts were extracted from this sample, but the document's structure and embedded URLs suggest it is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/free-robux-no-human-verification-or-survey-2021-game-hack.
  • 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/431946152/free-robux-no-human-verification-or-survey-2021-game-hack PDF link annotation
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/robux-earning-sites_GM431946152.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins-2021_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
stream_003_off00004db2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DB2 25020 bytes
SHA-256: de9a29d584ab13e3205dcd6bd3923a5917858a8651afa3d6114b2d83b8461c83
font_01_sfnt_off00008665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8665 19556 bytes
SHA-256: 08b2a18d96b3566ec838f0e87c4bb916e955b8f8af04b9064418114d078945b8

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