Malicious PDF — malware analysis report

Static analysis result for SHA-256 51e98fcf2f82157e…

MALICIOUS

PDF

32.6 KB Authoring application: Soda PDF
MD5: d579ea90b573a5269dd6fec3e16b127c SHA-1: 52d87987ccd52d1f1d91fcb2c2651f4749dbb65b SHA-256: 51e98fcf2f82157e2805930ccf9bb7c0e735d2d356c42e069b0aa4ebcb46f5dd
150 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple external PDF files hosted on various domains, a common technique for SEO poisoning and phishing lures. The document body, though heavily obfuscated, contains references to 'Verizon fios channel guide', suggesting a pretext to trick users into clicking the malicious links. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and redirection behavior.

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://metrowalkatlanta.org/uploads/1/3/0/5/130542971/kivegefalarako.pdf
    • http://bhamorthopedicacupuncture.com/uploads/1/3/0/6/130639347/8354068.pdf
    • http://kresadmissions.com/uploads/1/3/0/6/130620982/zamafep.pdf
    • http://pinilu.ourverify.com/uploads/2020/01/28/5141912.pdf
    • http://germanpinscherpuppies.com/uploads/1/3/0/6/130622049/zonexe.pdf
    • http://missteendreamusa.com/uploads/1/3/0/2/130274315/garogudolagi.pdf
    • http://musake.net/uploads/1/3/0/5/130588438/vubuderajepo.pdf
    • http://tokeplusherbs.com/uploads/1/3/0/6/130639412/ruredigibuteg.pdf
    • http://nesteam.co.il/uploads/1/3/0/5/130543212/gugobi-jetuwujupir.pdf
    • http://schmittwoodworkingllc.com/uploads/1/3/0/5/130543761/130543761.html#verizon+fios+channel+guide+fairfax+va+2012

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011a7.bin
8f34c8603974d6ad68071a4dde2c3949d450e61082dd1a359961a540f517ffb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A7 7888 bytes

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