Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5f0ab8437a986b7…

MALICIOUS

PDF

35.7 KB Authoring application: LibreOffice Draw
MD5: c7bc919ee54322eec9b3da669fa614ed SHA-1: 20df11ff18f339c325b3add8e29b2fdf899d9bfd SHA-256: d5f0ab8437a986b7b63fb1baa7dc779dec6818a6da5a10cc58302c950a25d24a
150 Risk Score

Malware Insights

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

The PDF file was identified as malicious by a machine learning classifier and ClamAV, which flagged it as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. Static analysis revealed a large number of embedded external links, indicating a link farm or redirection strategy. The primary heuristic 'PDF_SEO_LINK_FARM' confirms this, pointing to numerous PDF files hosted on various domains. The document body text, though partially corrupted, mentions 'Classical music for studying free', suggesting 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://noemiwahls.weebly.com/uploads/1/3/0/5/130550833/309903.pdf
    • http://morristem.com/uploads/1/3/0/3/130323328/590699.pdf
    • http://bantunation.ca/uploads/1/3/0/6/130605089/fubejebite.pdf
    • http://fcalynn.org/uploads/1/3/0/5/130539249/6341086.pdf
    • http://lindatownshend.com/uploads/1/3/0/5/130588244/4862262.pdf
    • https://jexujijevuliru.weebly.com/uploads/1/3/0/5/130550887/mogibavaj.pdf
    • http://bmphotographer.com/uploads/1/3/0/6/130605270/zuwiko.pdf
    • http://kevin938.net/uploads/1/3/0/6/130620841/6311738.pdf
    • http://addongyan.com/uploads/1/3/0/6/130640013/130640013.html#classical+music+for+studying++free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000112e.bin
13a631158160403f1d7643530e34733edccef39578efd032dd381df28df73364		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112E 8112 bytes

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