Malicious PDF — malware analysis report

Static analysis result for SHA-256 4024090e4b8c31eb…

MALICIOUS

PDF

41.9 KB Authoring application: Scribus
MD5: 627436079b2b940316bde1a4fd510f86 SHA-1: d06befacc0499dca2e57378b0d6d9669a78f56e8 SHA-256: 4024090e4b8c31ebcb1355cbe6a3360489c5f3185369d44f70b02f76083acfa6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links pointing to external PDF documents hosted on various domains. This behavior is indicative of a link farm or SEO poisoning attack, designed to drive traffic to potentially malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection motive. No scripts were extracted from this sample.

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://usacces.com/uploads/1/3/0/4/130476427/pilaxu_mogewero_xegoguloj_tukud.pdf
    • http://nuezdejabon.com/uploads/1/3/0/3/130313504/4041b29bf3432.pdf
    • http://mezzosoprano.site/uploads/1/3/0/5/130551166/dotoxegukegufomigu.pdf
    • http://bdagdc.com/uploads/1/3/0/3/130379115/gososuruliji.pdf
    • http://newyorkwinelaw.com/uploads/1/3/0/8/130813630/kenixitis.pdf
    • http://nozonebasketball.org/uploads/1/3/0/5/130546977/ccc5cb7b0.pdf
    • http://psrglobal.net/uploads/1/3/0/7/130776676/8060997.pdf
    • http://torrezion.com/uploads/1/3/0/8/130813846/gelejubasipipelavit.pdf
    • http://cutestcabins.com/uploads/1/3/0/5/130539583/givomuw.pdf
    • http://bpoconcierge.com/uploads/1/3/0/7/130739488/tapasejatug-vujoka-kafuziwedalo.pdf
    • http://fitness-private.com/uploads/1/3/0/5/130539679/wadilawenaturo-vovolot.pdf
    • http://readingrescuetalk.com/uploads/1/3/0/6/130620620/patikefusatir.pdf
    • http://sbobet.lucky1st.com/uploads/1/3/0/6/130621411/130621411.html#low+neuroticism+high+openness

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c27.bin
eb2c71135b5e8934fdbd8d60fbdf37f8b20428835e2cfbe74ffdc502d704dfd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C27 8072 bytes

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