Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d158b2466ed558e…

MALICIOUS

PDF

37.6 KB Authoring application: Solid Converter PDF
MD5: 241b7fe72c48a22d761bdb81d7929676 SHA-1: 36bd1388a1ed9023010b918dc4c3768ec775573a SHA-256: 6d158b2466ed558e45dd03edfcc50a1d499b4cd9f05f1b3f92eed2b1e0351170
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, indicating a link farm designed to attract traffic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to malicious content or download further malware. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://sthfromnth.com/uploads/1/3/0/6/130639272/7415386.pdf
    • http://daniel-stripedtiger.com/uploads/1/3/0/5/130539702/sudoxazugujoxo.pdf
    • http://thetruthaboutarthurspector.net/uploads/1/3/0/3/130313766/xodit_gikiwo.pdf
    • http://fundsamurai.com/uploads/1/3/0/4/130488833/nivafizekodisinesuwu.pdf
    • http://ba.shrinkequation.com/uploads/1/3/0/7/130775376/7cbccd8.pdf
    • http://brandonlovesraechel.com/uploads/1/3/0/9/130969542/sogilozex.pdf
    • http://luciecostinhall.ca/uploads/1/3/0/5/130545745/1358892.pdf
    • http://qmenthailand.com/uploads/1/3/0/5/130551058/piremovuvuwa.pdf
    • http://www.evolvingtruths.com/uploads/1/3/0/7/130775023/vusala.pdf
    • http://illuminopoly.com/uploads/1/3/0/3/130323527/5144559.pdf
    • http://www.cryptofleamarket.co/uploads/1/3/0/7/130776405/bibibevefad.pdf
    • http://headblocks.org/uploads/1/3/0/9/130969441/130969441.html#orthobullets+ulnar+nerve+decompression

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003af6.bin
fcc4c5e3a3640f514395a4e0a640385dcaf0545f53e1bce5aa8ee2613ee68e35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3AF6 9068 bytes

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