Malicious PDF — malware analysis report

Static analysis result for SHA-256 416b2e2d20f6ff85…

MALICIOUS

PDF

42.9 KB Created: 2021-05-17 20:26:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2b410e9f32e423362ecd63527826250b SHA-1: 50d8cd777f00c213cc7a9825f06500dc24080886 SHA-256: 416b2e2d20f6ff8569fc98644a15d79cd0f06a6eccd61f40ffafbf7be09e8fce
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, one of which is associated with a brand impersonation lure for PayPal, directing users to download a file. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. The presence of a visual download button further supports the phishing and download lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/games-like-minecraft-but-free-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/479516143/games-like-minecraft-but-free-game-hack PDF link annotation
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/free-roblox-cards-pin-number_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_003_off00004e30.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E30 24744 bytes
SHA-256: 2f3b7977c1eee101fd67066d9f53965a53ff982c2bd7ef88f3f5976ed44c42c2
font_01_sfnt_off00008584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8584 18352 bytes
SHA-256: 6b77667e5393daef3d5c6d964ee9e1e8f0bf8aa621da45ad5803b98c0c35dbed

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