Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b9553facf903a79…

MALICIOUS

PDF

37.4 KB Created: 2021-05-22 19:58:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c3506f0833bb514fee05c31b17df6c24 SHA-1: 6d1cf060bac2c7c0d961623527a236d8df50023d SHA-256: 0b9553facf903a791c93dc8e5662ad1ebf1688db17eb1b656b985227fe0c70bf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document uses social engineering tactics, specifically a 'ClickFix' lure, to trick users into executing commands or visiting malicious URLs. The document body contains multiple links to external websites that offer game hacks and free downloads, suggesting a phishing or scam attempt. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/minecraft-pocket-edition-free-download-game-hack PDF link annotation
    • https://hekl-software.de/images/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://hekl-software.de/images/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • https://hekl-software.de/images/fbchampion-com_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://sigmaclient.info#2In PDF document text
    • https://flux.today#3In 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_002_off000035c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35C1 25780 bytes
SHA-256: 765f87fe2946010b704cc99c83a02728822ec53b2d5640b87c6cd368580d46ac
font_01_sfnt_off0000702d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x702D 18616 bytes
SHA-256: 74c3d0dac38db02fae044005a19145e6493ffdefda41676fc7dac63f0b05f007

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