Malicious PDF — malware analysis report

Static analysis result for SHA-256 022dd055cd95ad7d…

MALICIOUS

PDF

41.9 KB Created: 2021-05-10 14:39:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2ecf3f64e913b470ddfbc596f501af76 SHA-1: 7c2bab7d0016afe934ea958fbb61bccfb423d4dd SHA-256: 022dd055cd95ad7d5d276b8c100726fbc6d732081b65053e58c0275fe0ddd214
120 Risk Score

Malware Insights

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

The PDF contains embedded links and a visual download button, directing users to external sites that host potentially malicious files. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a link to known malicious infrastructure, indicating a high likelihood of malware distribution. The document body, though partially corrupted, suggests a lure related to game downloads, a common tactic for distributing malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • 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-pe-0.16-0-apk-download-free-game-hack In PDF document text
    • http://foo.com.tw/files/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-link_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_003_off00004437.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4437 25760 bytes
SHA-256: fb3dbff66c4ec0bdb448fce8b64d1b3acf94ec2de14eabbf0dd0eb2cfec5b4a3
font_01_sfnt_off00007edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDD 19300 bytes
SHA-256: 520ea12fa60618e22dfb92575853af2f045fc875098f6a67670d45663928019c

Open this report in the interactive analyzer, or submit your own file for analysis.