Malicious PDF — malware analysis report

Static analysis result for SHA-256 66a392814924de4f…

MALICIOUS

PDF

40.2 KB Created: 2021-05-23 10:30:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 158b5ccf2c2d30ce53a02667b854b518 SHA-1: b340474add71770a6286aa35bd8752a922676ddb SHA-256: 66a392814924de4fbad1ebd6b200e5b9cc7c8e7759fade1ef39f2be01fda13e7
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a prominent call-to-action button, suggesting a social engineering attempt to trick users into visiting malicious sites. The heuristic 'SE_CLICKFIX' indicates the document likely instructs the user to run a command, further supporting a malicious intent to bypass security measures and potentially download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7877

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/is-minecraft-bedrock-edition-free-game-hack PDF link annotation
    • https://cluster-consulting.com/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://freegiftcodes.euIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34A2 30532 bytes
SHA-256: cbe983c5474ff9751ea7506852837999508ae8c5190c80360e7fe4cb8ea16ef8
font_01_sfnt_off00007234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7234 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off00007bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF2 18268 bytes
SHA-256: c81a05c902e5b7336ce3afe221fe42e1a1247b419ae57a3dec90c8cc8a9629c1

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