Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b7699f98cdacf95…

MALICIOUS

PDF

43.8 KB Created: 2021-05-16 15:18:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5e4435473b8a4cb67775d3141d08d701 SHA-1: e621675264c822befe2a300af1b95e196c4bda7a SHA-256: 5b7699f98cdacf95ab941ccac7b7eb0176482d822f91acc1544b0abba7662756
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded URLs and a heuristic firing for a social engineering attack (ClickFix) that instructs the user to run commands. The document body, though heavily obfuscated, contains references to game downloads and a primary URL pointing to a potential payload. This suggests the document is designed to trick the user into executing malicious code, likely by downloading and running a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/mcpe-download-game-hack PDF link annotation
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cfd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CFD 27356 bytes
SHA-256: 70b7feace5872f3fd581ab3ac3155fc8bb2516435da1acff89ec581bf1c7abc1
font_01_sfnt_off000088f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88F0 18240 bytes
SHA-256: a3c3f4f77bf23c89057dc73fb74ec5a2774110dd3bd29e37df914f9a3327f43f

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