Malicious PDF — malware analysis report

Static analysis result for SHA-256 6130b1036a24be44…

MALICIOUS

PDF

38.6 KB Authoring application: Nitro PDF
MD5: c750ddcfacba0297ba439d21692e8e63 SHA-1: a9328b0b3c29622a4a32caac86a26cda1f2751fb SHA-256: 6130b1036a24be448adbffeb05c888f268675b0a98cee052721b9482248e31fd
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a campaign to distribute content or manipulate search engine results. The ClamAV detection and ML classifier further support its malicious nature, classifying it as phishing-related malware.

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://niagaraadvantage.ca/uploads/1/3/0/2/130272504/8392442cb9a.pdf
    • http://taratomicevic.com/uploads/1/3/0/3/130313243/6bd9e209c1.pdf
    • http://2findyourhomevps.net/uploads/1/3/0/6/130604524/316132.pdf
    • http://methylationassociation.com/uploads/1/3/0/5/130543155/favokitojo.pdf
    • https://nosurabomoda.weebly.com/uploads/1/3/0/4/130483309/podajen.pdf
    • http://adimef.com/uploads/1/3/0/6/130639263/pezikato-tabutuzek-sezovatedalivan-wumiba.pdf
    • http://ngpsychology.com/uploads/1/3/0/6/130604918/e6851.pdf
    • http://cecilyeiferle.com/uploads/1/3/0/5/130550827/130550827.html#one+bendigo+tv+guide

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001283.bin
5ecb0ee10fffae93cdba65fd9b2d104019d71f6a5ad9df9eeb8898b9e382bd25
pdf-font-stream PDF embedded font (sfnt) at offset 0x1283 8004 bytes