Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec20e5abd185178…

MALICIOUS

PDF

37.1 KB Authoring application: Poppler-utils
MD5: 1ae950709687a7800066edaf069d9d67 SHA-1: a42f9f8e22bc4cba997d274843f2c62d92285e6d SHA-256: 9ec20e5abd185178dcd95d01c2ecc2deb6b00c88b8bc30618d771d059991a6a6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a machine learning classifier indicated a high probability of maliciousness. The heuristic PDF_SEO_LINK_FARM indicates the presence of a large number of external PDF links, with the first identified URL being http://theworkingconnectionllc.net/uploads/1/3/0/6/130621063/a751ee.pdf. This suggests the document is designed to act as a lure, redirecting users to a network of potentially malicious sites.

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://theworkingconnectionllc.net/uploads/1/3/0/6/130620431/a751ee.pdf
    • http://newburghmodelrrclub.org/uploads/1/3/0/5/130588763/a537132c40c4.pdf
    • http://mickaelpalma.com/uploads/1/3/0/2/130271015/wurofotolewup-xugesapa-danol-rederezexeb.pdf
    • http://mycccamp.com/uploads/1/3/0/2/130289224/7786397.pdf
    • http://irvingunnerving.com/uploads/1/3/0/6/130621063/bovofinifipomokera.pdf
    • http://mypurplelilyboutique.com/uploads/1/3/0/4/130436354/e914bdf.pdf
    • http://biexecutive.com/uploads/1/3/0/5/130588708/gekabe.pdf
    • http://construction-staffing.com/uploads/1/3/0/5/130552073/6237859.pdf
    • http://my-medicare-insurance.com/uploads/1/3/0/3/130313336/gilijup.pdf
    • http://vfmarket.net/uploads/1/3/0/7/130739663/7691056.pdf
    • http://christine-carney.com/uploads/1/3/0/6/130621418/lukekivikewa_bapipitofuw.pdf
    • http://misbailes.com/uploads/1/3/0/2/130289577/130289577.html#wasabi+chicken+yakisoba+nutrition+information

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012df.bin
fc69b5ce6c9130b6914474c1eb505a817bac10690239cf6c6f3e242c4204cfbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DF 8252 bytes

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