Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e1d49b635bd125e…

MALICIOUS

PDF

40.8 KB Authoring application: PDFBox
MD5: fc5695c04fc84c25a24a862629eb9f16 SHA-1: a03ad4aacc79b17c09ba539584b31518bcb103f7 SHA-256: 0e1d49b635bd125eb31345c51ee372c6e22a8be2e5f6cc1f949a277dfafa6309
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was detected as malicious by ClamAV and an ML classifier, specifically flagged for containing a large number of external links. The embedded URLs suggest a phishing or content-luring scheme, aiming to redirect users to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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
  • 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://rezebiv.paytosite.icu/uploads/2020/01/29/416314a7d.pdf
    • https://kukaridorakediw.weebly.com/uploads/1/3/0/5/130540284/wufadimuweguziwudik.pdf
    • http://scripttoscreenplay.com/uploads/1/3/0/5/130589194/322d625b9.pdf
    • http://meyerpaintingcompany.com/uploads/1/3/0/4/130489097/7e9e5a.pdf
    • http://alliesonthejourney.com/uploads/1/3/0/6/130639760/duwexo.pdf
    • http://cincoranchpoolbuilders.com/uploads/1/3/0/5/130543065/e0ec86e5616.pdf
    • http://mustlikeplants.com/uploads/1/3/0/4/130436188/130436188.html#holly+hobbie+oven

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000113f.bin
13e09aa1215fbf701040d0f1f47e4152895970dd510056b12764531e8a8e1e9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113F 8848 bytes

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