Malicious PDF — malware analysis report

Static analysis result for SHA-256 32fb3ba8d268f865…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 13:44:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c9c994508d17c46c80da4cd53f42aed1 SHA-1: bf4f2f877a9f63babe8d25a81c9415c681d6e247 SHA-256: 32fb3ba8d268f865490a87675b86cfa48f30183595348529a147c4e42c71a9ce
82 Risk Score

Malware Insights

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

The document contains multiple embedded URLs and a prominent call-to-action lure related to obtaining free in-game currency for popular games. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests that the document may be instructing users to open a password-protected archive, a common tactic to bypass security filters. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it leading to a malware download or other malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://netcdn.tw/app/431946152/can-you-give-me-robux-game-hack PDF link annotation
    • http://shoruq.sch.ae/userfiles/files/how-to-hack-someone-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-robux-no-verifications-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-august-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-free-summer-codes_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/hack-roblox-no-chash_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-clothe-goku-ui-free-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-hacks-hub_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/pokemon-go-free-upgrade_GM1094591345.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-tiktok-video_GM835599320.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-nerf-fps-2021-hack_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-robux-hack_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
font_00_sfnt_off00002d98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D98 22604 bytes
SHA-256: 26af9173d8f41e3a6ca9d1a936a32a9a0e9ae1b3fbfbbf9ef345f56ee6db1d8e
font_01_sfnt_off0000600a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600A 19144 bytes
SHA-256: 1f6a9e9047b344f638cd05b3f78edeba13b5d629985c77c5a3334f114300de1b

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