Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3a0af441a993737…

MALICIOUS

PDF

36.2 KB Authoring application: GIMP
MD5: e97a6742c2715209b9e433bf9d15852b SHA-1: 18b3b25f2e46854545746cd2be60a43bc2a0b831 SHA-256: f3a0af441a99373790df10243a91f6a4fe03174cbb1e3f4cbc8ac66489708af1
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, indicating a link farm for SEO manipulation. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support a malicious classification. The document body, despite being truncated, mentions '100 square addition worksheets' which appears to be a lure to disguise the malicious intent.

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://mynorthlakedemo.com/uploads/1/3/0/6/130620962/vedagajisab_pibomelefi.pdf
    • http://notoriginal.shop/uploads/1/3/0/6/130639199/diwowenemowemukod.pdf
    • http://truexagency.com/uploads/1/3/0/5/130550881/894983.pdf
    • http://zipalixe.gaika.biz/uploads/2020/01/28/1774310.pdf
    • http://collegeworksestimate.com/uploads/1/3/0/2/130291575/9538090.pdf
    • http://redmaplecelpipedu.com/uploads/1/3/0/5/130539354/sudad.pdf
    • http://adidasdeadstockmarketplace.com/uploads/1/3/0/4/130488741/2642241.pdf
    • http://muziekkapel.be/uploads/1/3/0/2/130289354/wefejep_nowamufu_penanowiraso_boropadom.pdf
    • http://zambiasafarihunting.com/uploads/1/3/0/4/130436188/130436188.html#100+square+addition+worksheets

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011de.bin
8d85cd482fa3ef407c2a6025a2f034251184d05fb77b057262140b2f5c6c845d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE 8468 bytes

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