Malicious PDF — malware analysis report

Static analysis result for SHA-256 c05e8edd79f56ee7…

MALICIOUS

PDF

44.4 KB Authoring application: Poppler-utils
MD5: 035cb36cee9855e7d1b402b33d0f33a8 SHA-1: b95da23f96182a323865bd8a5ad31fc5781e3141 SHA-256: c05e8edd79f56ee750c642d39fd0dd8ab5f6ef89ad28e9fa407a481c779807a7
150 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing lure. The embedded URLs point to various domains, with some confirmed as benign and others unknown. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or traffic redirection intent. The document body mentions 'Hitchhiker's guide to the galaxy movie quotes' and 'Towel Day', which appears to be a deceptive theme to mask the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://narrins.com/uploads/1/3/0/6/130604179/degipidorodagovolof.pdf
    • http://castlepinesvillagegardenclub.org/uploads/1/3/0/5/130588976/5591592.pdf
    • http://windsorhigh-capetown.weebly.com/uploads/1/3/0/2/130288338/9844ecebd447.pdf
    • http://colddiamnd.com/uploads/1/3/0/5/130551375/130551375.html#hitchhiker%27s+guide+to+the+galaxy+movie+quotes

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001051.bin
7a310c98905857fe7e79cd8dab8f70893f05b6e1415b315c8a85379709ffff8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1051 8748 bytes
font_01_sfnt_off000066ee.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66EE 16268 bytes

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