Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb56e5e9bbe7e6c…

MALICIOUS

PDF

36.2 KB Created: 2021-05-21 16:30:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f04396c68d3a4301c52527f35c2d9ae9 SHA-1: 66c078955a967da71640f7e1032238b2a280452e SHA-256: 8fb56e5e9bbe7e6c615920e1d35adc40fa0aaaac2bad16c044a22924b545abd1
82 Risk Score

Malware Insights

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

The PDF document contains embedded links and a heuristic firing for ClickFix social engineering, indicating an attempt to trick the user into executing a malicious payload. The document body and heuristics suggest a lure related to obtaining free game items or hacks, directing users to external URLs that likely host further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/how-to-get-java-minecraft-for-free-game-hack PDF link annotation
    • http://geometraperiotto.it/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-hack-roblox-for-robux_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_002_off00003263.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3263 25528 bytes
SHA-256: 6adc0300934b587b98c2c5d7214b8788b7823c398d31f3e954a7c3e953fd849c
font_01_sfnt_off00006c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8A 18152 bytes
SHA-256: b07ca7cfd9f4df49e8124e55bb29c456f703fc5bdce85e2b26b96107911b04a3

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