Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d8817e01eda71ac…

MALICIOUS

PDF

38.8 KB Authoring application: OpenOffice.org
MD5: b7b5744be9ac9101058260eebcef987f SHA-1: c34a4d8cbf3ec42ecce0be0ea1ae3e6ebb8636c5 SHA-256: 8d8817e01eda71aceecf221df1bc021bf083ad4586ddd0b1dfe12bd4353edac3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, a technique commonly used in SEO poisoning and phishing campaigns to direct users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the heuristic 'PDF_SEO_LINK_FARM' strongly indicate a phishing or malicious redirection attempt. The embedded URLs are the primary indicators of compromise, likely serving as download locations for further malicious payloads.

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://northhobby.us/uploads/1/3/0/4/130436451/xodagodidinovos.pdf
    • http://mywonderowl.com/uploads/1/3/0/4/130492689/silajadevuzozobuna.pdf
    • http://kadopodowe.change-expert.ru/uploads/2020/01/28/6bb35239f33.pdf
    • http://cdl4dvd.com/uploads/1/3/0/6/130620965/8671931.pdf
    • http://marlosonthemove.com/uploads/1/3/0/5/130551611/606846.pdf
    • http://bdaglobal.net/uploads/1/3/0/5/130551764/a9fbfd.pdf
    • http://beingself-centered.com/uploads/1/3/0/6/130621505/130621505.html#minecraft+sky+factory+4+server+downl

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010a4.bin
9143aceeecb549161bce82624461ff1b23e1282a7da041b8e46ac52f82e3d2dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A4 7824 bytes
font_01_sfnt_off0000511b.bin
6db2f878e0fd57d3a351d0d81a5ccd7b58f68df6728dadc3aee3ebeb1a1d6e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x511B 16068 bytes

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