Malicious PDF — malware analysis report

Static analysis result for SHA-256 522a9dea16e55f8d…

MALICIOUS

PDF

34.0 KB Authoring application: PDFedit
MD5: b82d2de2d1c7f66c43325a2b9d541b33 SHA-1: a5c500a1df90d76b3f85053ebf674b4c9677a6e8 SHA-256: 522a9dea16e55f8d65140ea00ac258b6dbe9fc9f8c6325261493de404569e8b9
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The primary attack pattern involves redirecting users to a link farm of potentially malicious documents.

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://bootstrappinbetty.com/uploads/1/3/0/7/130738837/zojedox.pdf
    • http://neworleansgainswave.org/uploads/1/3/0/6/130620436/6761835.pdf
    • http://ctrader.it/uploads/1/3/0/5/130589322/15dc5cdc03ec8.pdf
    • http://krishnaandnatansh.com/uploads/1/3/0/2/130287211/dizerip.pdf
    • http://capellandecampo.com/uploads/1/3/0/6/130604521/molafeji_selujikevamo_dutureke_dawobinugafa.pdf
    • http://nimueart.com.au/uploads/1/3/0/5/130588727/77c272608ca.pdf
    • http://www.cosmecordova.com/uploads/1/3/0/2/130273798/xuxesitu.pdf
    • http://www.somervillelandscapeandtree.com/uploads/1/3/0/7/130776307/f5f85d7df.pdf
    • http://thingstodovictoria.com/uploads/1/3/0/4/130436147/mapilulelubebebo.pdf
    • http://chloecustomcollections.com/uploads/1/3/0/6/130621593/f51ba8d0.pdf
    • http://northernmetal.shop/uploads/1/3/0/6/130621587/4128691.pdf
    • http://personalnetworkappliances.net/uploads/1/3/0/5/130542907/de867070d3b16.pdf
    • http://thisismylifesong.org/uploads/1/3/0/7/130776212/dibojifibibelag-mixisene-gavar.pdf
    • http://midtrans.online/uploads/1/3/0/7/130739793/bolaraxif-masunufisudob.pdf
    • http://sff7l.salon225.com/uploads/1/3/0/5/130588559/130588559.html#the+aggregate+supply+curve+%28as%29+in+this+diagram+is+consistent+with+the+view+of+aggregate+supply

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a0a.bin
aa6632f5d62bd55bce96e7f57f0dcebb4d91480f7128b868c59d3829b9b02a50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A0A 7960 bytes

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