Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3b26866f3c1e140…

MALICIOUS

PDF

48.2 KB Authoring application: LibreOffice Draw
MD5: a85edf6146baef42f1b5cfcae135d2b8 SHA-1: 5561aec7ed6abfa7a1d8542f9916ce1c317f94bb SHA-256: d3b26866f3c1e140d3938ff41a112a1540a81c5c3ef53106537129e66008318a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, a technique commonly used for SEO poisoning or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing and traffic redirection. The document body itself is heavily obfuscated and contains garbled text, providing no clear user-facing lure but reinforcing the malicious nature of the file.

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://frayedneststudio.ca/uploads/1/3/0/6/130604789/zetonafo.pdf
    • http://yamayogacollective.com/uploads/1/3/0/7/130776818/4939866.pdf
    • http://mrsscharnhorst.com/uploads/1/3/0/6/130605341/4142451.pdf
    • http://partyriesling.com/uploads/1/3/0/6/130604627/7338912.pdf
    • http://playbash.com/uploads/1/3/0/7/130738949/9229d8a7.pdf
    • http://mallsecurity.net/uploads/1/3/0/3/130323928/8f8bd.pdf
    • http://somethingsomethingtheater.com/uploads/1/3/0/8/130874678/mevagaragal.pdf
    • http://picorvaginal.com/uploads/1/3/0/5/130540767/xajexavajibimox-ruwamix.pdf
    • http://webdisk.bizblog.hk/uploads/1/3/0/8/130813829/c27b1dc81f16c.pdf
    • http://bramvanroyphotography.com/uploads/1/3/0/8/130813782/5f6d61ecbdd70dc.pdf
    • http://squarebusinessconstruction.com/uploads/1/3/0/8/130874060/bewetovezeg.pdf
    • http://holypostapp.com/uploads/1/3/0/5/130539004/d701eea66042.pdf
    • http://www.cglewis.com/uploads/1/3/0/6/130622103/riwodomewodolaza.pdf
    • http://balletclassique.net/uploads/1/3/0/7/130776452/b070d.pdf
    • http://encanaplanophotos.com/uploads/1/3/0/3/130379182/3256461.pdf
    • http://naiadenorthamerica.com/uploads/1/3/0/6/130604955/9512994.pdf
    • http://71-159-221-57.overtimefitness.com/uploads/1/3/0/5/130551449/130551449.html#vertical+axis+wind+turbine+calculation

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006167.bin
e4632ef58a32c9e0e8113d205f6ed1b6c45b316a2d32d1b2be67e99aa40b8ef5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6167 8208 bytes

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