Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0fb6fe33fd6a188…

MALICIOUS

PDF

44.4 KB Authoring application: Smallpdf Desktop
MD5: 2e0fed821ba11a13649264042605e823 SHA-1: 6b15e38070dd75384e36e02a6a3d00979d38df29 SHA-256: f0fb6fe33fd6a188a325f90aa20c5684cd63db52c2e69481048ce40c918a66f6
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. ClamAV also detected this as Pdf.Phishing.TtraffRobotInstall-7605656-0, indicating a phishing or traffic redirection scheme. The document body appears to be corrupted or truncated, but the primary malicious activity is the mass linking to external PDF files.

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://photoeditingbyemmie.com/uploads/1/3/0/6/130605194/911ba93df.pdf
    • http://buildbelievers.net/uploads/1/3/0/6/130604024/aa3ea37.pdf
    • http://sg-gi.org/uploads/1/3/0/5/130590353/bf20cbcc4691.pdf
    • http://flimsyfilms.com/uploads/1/3/0/5/130543483/fofojabojaz_tupajafojus_guxejizeba_kimal.pdf
    • http://www.grimsbyhousecleaning.com/uploads/1/3/0/6/130639822/b03a55fb44cad16.pdf
    • http://deannaheon.com/uploads/1/3/0/6/130639356/7439307.pdf
    • http://bergencabinets.com/uploads/1/3/0/5/130538833/datelid-serafurorel.pdf
    • http://studiomaisonbejart.com/uploads/1/3/0/7/130739301/3890535.pdf
    • http://alpeshome.info/uploads/1/3/0/4/130483125/5627024.pdf
    • http://implantsnewjersey.com/uploads/1/3/0/3/130323697/xevero.pdf
    • http://alaskacharr.org/uploads/1/3/0/6/130604408/54a9f5333d3.pdf
    • http://ignomics.net/uploads/1/3/0/5/130539897/netiwuregotu_darubuvateru.pdf
    • http://ttmane.com/uploads/1/3/0/2/130272963/f19c72.pdf
    • http://lansingmihomesforrent.com/uploads/1/3/0/6/130621814/7426f.pdf
    • http://tunstall-health.com/uploads/1/3/0/5/130551543/rotedogazonijululusi.pdf
    • http://4u8qy1.bdgct.com/uploads/1/3/0/3/130379104/130379104.html#causes+and+effects+of+teenage+pregnancy+thesis

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051d3.bin
1d85cc64c965cd8afc5b428dfc354d215b1ddc446022f55cb4dc09a32e37fa87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51D3 8512 bytes

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