Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd0c81deb1d78ba…

MALICIOUS

PDF

47.9 KB Authoring application: Nitro PDF
MD5: f3bf9a3e5ea71f98e446f0937e284d3c SHA-1: 45d1d106611c3f5651549b7c012e162a9f09159b SHA-256: ddd0c81deb1d78ba0642de49f7e73e4bc04e3e9173423006cbc9daed97b96229
128 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm for SEO or phishing purposes. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicates a phishing campaign. The document body, though partially corrupted, contains phrases like 'Quarterly accomplishment report' and includes multiple URLs, reinforcing the lure to download further malicious content.

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://norcaldjs.net/uploads/1/3/0/5/130540493/8000562.pdf
    • http://almosteverything6dollars.com/uploads/1/3/0/6/130620508/gerepi.pdf
    • http://moderntechnique.net/uploads/1/3/0/4/130483191/zediwexedajop.pdf
    • http://oachristchurch.org/uploads/1/3/0/7/130739275/3514776.pdf
    • http://crossfitforteustis.com/uploads/1/3/0/4/130492127/221d5.pdf
    • http://vedarukiz.cosmixmovies.com/uploads/2020/01/29/fb6973.pdf
    • http://sandsfoleyentertainment.com/uploads/1/3/0/4/130475932/130475932.html#quarterly+accomplishment+report+deped

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010f3.bin
5226df5d89675212346b4992c6eacfd2a8d773c8e1f51b521a16dd2d024e2363		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F3 8460 bytes
font_01_sfnt_off00007578.bin
6db2f878e0fd57d3a351d0d81a5ccd7b58f68df6728dadc3aee3ebeb1a1d6e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7578 16068 bytes

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