Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0b4a82b5c01c27b…

MALICIOUS

PDF

31.6 KB Authoring application: SWFTools
MD5: a3015f15273d29b67e988e2e08e618c6 SHA-1: 7edf40e0c1cb31d1790eb1d6536d847af8e316a0 SHA-256: f0b4a82b5c01c27b930e80a59f948853c924fed86fc1e0eb593f2b656eb75deb
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files across multiple domains. This behavior is indicative of a link farm or a phishing campaign designed to drive traffic to malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and traffic redirection hypothesis.

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://northfieldpro.com/uploads/1/3/0/4/130488175/7871791.pdf
    • http://crinem.com/uploads/1/3/0/4/130489066/lofepigako_busikoterif_zazad_wunolofofig.pdf
    • http://mysticstudiosllc.biz/uploads/1/3/0/4/130476574/razawetadivum_duvokukamumelof.pdf
    • http://ujcdsgn.com/uploads/1/3/0/6/130603982/tuwudirif.pdf
    • http://sqlthemovie.com/uploads/1/3/0/4/130476372/takuvigezuvi.pdf
    • http://myslickpic.com/uploads/1/3/0/4/130488955/686875.pdf
    • http://mobilehrandleadershippros.com/uploads/1/3/0/6/130603737/gebidumulogi_fotozagokitoz_xizonofex.pdf
    • http://mustangbroncowrestling.weebly.com/uploads/1/3/0/2/130271219/bazakokifunud_gozij.pdf
    • http://tren.net/uploads/1/3/0/6/130621045/1358368.pdf
    • http://mgtavconference.com/uploads/1/3/0/3/130323250/0210a6.pdf
    • http://somersetfoodtrail.org/uploads/1/3/0/7/130740598/130740598.html#accomack+circuit+court+case+information

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000124e.bin
0c1fa94ca528cec9d0d0f2775ffd3c5043c84653008bfb562ff83c47926b3344		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124E 8064 bytes

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