Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fed71444f2f1da4…

MALICIOUS

PDF

35.7 KB Authoring application: Pdftk
MD5: 0a0c62669f80701649dcf484d8273ab0 SHA-1: c8c59f87c8ca6d14c7935b323a19352a4d6b8e66 SHA-256: 1fed71444f2f1da450f6eb46dbcbd6b5139eff5470dbbe5df14b78a3d6497b76
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 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 websites. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though partially corrupted, contains text related to 'American airlines' and 'miles', suggesting a lure to trick users into clicking the links.

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://campcruz.com/uploads/1/3/0/4/130488273/9398166.pdf
    • http://jobax.z-kiski.fun/uploads/2020/01/27/4e6df5ea.pdf
    • http://xavuvi.smpix.ru/uploads/2020/01/28/d4e8a98a8d.pdf
    • https://mukolopiwofu.weebly.com/uploads/1/3/0/4/130483045/2246148.pdf
    • http://keyproserv.com/uploads/1/3/0/4/130489446/6084164.pdf
    • http://fijedowixe.1331.wtf/uploads/2020/01/27/f75f80af0c5eb1.pdf
    • http://vigineg.daikabin.com/uploads/2020/01/27/gegirivigitixi_fuwududep_ditivowanune.pdf
    • http://comicjunky.net/uploads/1/3/0/6/130620871/logepizalinosa-zujuteko-dofigonopenuz.pdf
    • https://fanusosedavin.weebly.com/uploads/1/3/0/4/130483552/229c94a7ec60e.pdf
    • http://terraeuropa.net/uploads/2020/01/28/bedava-xapife-loxul-zasegixal.pdf
    • http://legacytaxidermy.net/uploads/1/3/0/6/130604984/8726286.pdf
    • http://pawtailspetsitting.com/uploads/1/3/0/6/130620520/dolubodavifazum.pdf
    • http://juliejesternewman.com/uploads/1/3/0/3/130312957/130312957.html#american+airlines+contact+information+usa

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001333.bin
625d8716c20e503a1dd88d0c5b4ebffedec7810432608602f4dd3b287905c46d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1333 8240 bytes

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