Malicious PDF — malware analysis report

Static analysis result for SHA-256 408e7020390f394f…

MALICIOUS

PDF

40.5 KB Authoring application: Pdftk
MD5: a07d557e4ea19b0834f948986b0b177c SHA-1: ee79d2127a52a630e54c2cb298568d7245d143c2 SHA-256: 408e7020390f394ff530db395253c4d3ec411e3ffe8cb7c39f1304f520542b18
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and the ML classifier's high confidence score further indicate malicious intent. The primary goal appears to be SEO manipulation or distributing traffic to a large number of linked PDF files, as evidenced by the numerous URLs found in the document body.

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://eventsinmower.com/uploads/1/3/0/6/130603749/bewaje_movanofu.pdf
    • http://hazeltreeclinic.com/uploads/1/3/0/6/130621626/6347485.pdf
    • http://anonima-net.fun/uploads/2020/01/27/5517237.pdf
    • http://uniquelyyourslandscapes.com/uploads/1/3/0/6/130621865/304f9c0a3f39e.pdf
    • https://rapisavuw.weebly.com/uploads/1/3/0/2/130288334/21b0233d69c3fe5.pdf
    • http://cornerstonemindbody.com/uploads/1/3/0/6/130621871/85a16b4786f26.pdf
    • http://lilaclighthouse.com/uploads/1/3/0/5/130588861/mavofuvinel_lumituvawuw_vewafasopew.pdf
    • http://sibozenu.creamzdorow.ru/uploads/2020/01/29/piwibo.pdf
    • http://designsbycarolann.com/uploads/1/3/0/6/130640163/c18af5a3af.pdf
    • http://anastasiadalziell.weebly.com/uploads/1/3/0/5/130545932/68500baf1dc.pdf
    • http://nottonvillagehall.weebly.com/uploads/1/3/0/2/130287454/3862943.pdf
    • http://mysearchrealestate.com/uploads/1/3/0/5/130543976/rasuzira_tojanat_babamiwojewape.pdf
    • http://riz.womanforyou.info/uploads/2020/01/27/4300728.pdf
    • http://skyeguy.com/uploads/1/3/0/5/130589137/130589137.html#experimental+lab+report+sample

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013b4.bin
a0f7343429576c3dbb7ecc684680c3f560d0069d92618b238c6e70146bc8dc80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B4 8548 bytes

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