Malicious PDF — malware analysis report

Static analysis result for SHA-256 0574f176793b769d…

MALICIOUS

PDF

37.3 KB Authoring application: Solid Converter PDF
MD5: 2a62bb6e29088724a78c372d5c2d9837 SHA-1: 66243e7f5cdbe2eba3d6e7fdce21481a129bdd1e SHA-256: 0574f176793b769d4f83ac6def0d49c2adca90b7532c55135b73a820ef3b316c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, many of which are structured as 'link farms' pointing to other PDF files. This behavior, combined with the ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0', strongly suggests a phishing or malicious redirection scheme. The document body, though partially obfuscated, also contains URLs that likely serve as lures to external malicious content.

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://affectivedevelopment.com/uploads/1/3/0/4/130476984/52731fef602b.pdf
    • http://northfieldpro.com/uploads/1/3/0/3/130379141/6274673.pdf
    • http://moldyold.com/uploads/1/3/0/7/130739182/jilavato-wiwugokalak-lufew.pdf
    • http://offthepier.net/uploads/1/3/0/4/130435574/b51e2b.pdf
    • http://ressource-therapie.com/uploads/1/3/0/2/130291785/ruwemazetezilomi.pdf
    • http://moxi.fastforcash.xyz/uploads/2020/01/28/vefajukulolepixet.pdf
    • http://inglesaldia.com/uploads/1/3/0/5/130551756/mozovifiwubaxaso.pdf
    • http://aenderungschneiderei-musovic.com/uploads/1/3/0/6/130621533/dabomimov.pdf
    • http://derwoodmarket.org/uploads/1/3/0/5/130588940/2acb73202c3.pdf
    • http://smartmix.xyz/uploads/2020/01/28/1083465.pdf
    • http://wibom.dk/uploads/1/3/0/3/130313605/4839992.pdf
    • http://nvarealestateresource.com/uploads/1/3/0/4/130479171/1248007.pdf
    • http://djspizza1.com/uploads/1/3/0/2/130287873/130287873.html#comma+practice+worksheet+7th+grade

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001310.bin
2b9e54716b2edd6dcd6a3c05e324c696d408894b9026416be772ce3b628c3b48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1310 8188 bytes

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