Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4fbc36ac0fa9b4e…

MALICIOUS

PDF

45.5 KB Authoring application: PDF Studio
MD5: 871ef0968c230b57d9b57e4570913b2c SHA-1: dec3cec1308859b5a85e7d1af9e0410dddc7c8bf SHA-256: d4fbc36ac0fa9b4e2c677f43daa183035e5538101968234545b97aa49527815d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external websites, a common tactic for phishing or distributing further malware. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly suggests a phishing or traffic redirection purpose. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of a mass external link farm, indicating a malicious intent to drive traffic to potentially compromised or malicious sites.

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://childrensliteratureassembly.com/uploads/1/3/0/5/130590105/rotoxumival.pdf
    • http://reedhospitalityassetmgt.com/uploads/1/3/0/6/130604710/xenekakabeba_jovegexag_dupitofu_pegufo.pdf
    • http://remotedatabaseadministrators.com/uploads/1/3/0/6/130620384/749ce50e7a13.pdf
    • http://san69.com/uploads/1/3/0/6/130621516/130621516.html#healing+code+truth+statements

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011dc.bin
3a2d46f99f0d7a23403de99ee190c1134132de77454558a88b094c15187538e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC 8632 bytes
font_01_sfnt_off00006b61.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B61 16268 bytes

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