Malicious PDF — malware analysis report

Static analysis result for SHA-256 44bf010b2ed38c31…

MALICIOUS

PDF

39.9 KB Created: 2021-05-20 22:12:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 53b48804427504bf268891d7e9aa21bc SHA-1: 8b75c5d87c9bfe3109d69c579f50f970a23e96c1 SHA-256: 44bf010b2ed38c317c09209014b9c63bb02c733954a5256232aaff52fe97126c
108 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links pointing to known malicious redirector infrastructure, specifically a URL related to hacking Roblox accounts. The document body also contains urgency lures and calls to action, reinforcing the malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/431946152/how-to-hack-someone In PDF document text
    • http://ghhs.com.my/images/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • http://ghhs.com.my/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ghhs.com.my/images/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://ghhs.com.my/images/robux-xyz_GM431946152.pdfIn PDF document text
    • http://ghhs.com.my/images/free-tiktok-likes-generator_GM835599320.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_off0000353b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x353B 30340 bytes
SHA-256: 42db3761ac14a90e500d139017ad236366560205bc9175b6579f81f47a3e1acf
font_01_sfnt_off0000790c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x790C 18912 bytes
SHA-256: 9f53b096903929334954973b1f22b9a4d0ba47253044b0676b0b61e1e4f10122

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