Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2138e8efd9f55fb…

MALICIOUS

PDF

53.9 KB Authoring application: Adobe PDF Library 9.0
MD5: 541bb0da819249dcedb24c025c106f98 SHA-1: 2d2201128c9b1963b67b2e8ae06cac1bfb5e15b7 SHA-256: c2138e8efd9f55fb7e90d6d919d9b41760325f40d55cefe439ee30dbfe574064
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm designed to distribute malicious content or conduct phishing attacks. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing classification. No scripts were extracted from this sample.

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://justbcosmetics.com/uploads/1/3/0/5/130551857/7694028.pdf
    • http://dde00m.site/uploads/1/3/0/6/130639028/kuzaxexa-wopijekuzuzos.pdf
    • http://agealive.net/uploads/1/3/0/3/130379589/b152ed85b84c.pdf
    • http://22dimthes.weebly.com/uploads/1/3/0/5/130588698/pokatafovosiwukawo.pdf
    • http://smgoldrup.com/uploads/1/3/0/2/130289693/1800314.pdf
    • http://invisionappresources.com/uploads/1/3/0/3/130379548/6462479.pdf
    • http://bdcont.com/uploads/1/3/0/2/130288468/doxonupa.pdf
    • http://dokafupor.worldtraveltrip.com/uploads/2020/01/29/wozunuteketumu.pdf
    • http://nealcm.com/uploads/1/3/0/5/130551162/6f1419d37d6.pdf
    • http://learnganow.com/uploads/1/3/0/4/130436306/taberewuw.pdf
    • http://nycelitehealth.com/uploads/1/3/0/6/130639197/bigipemowovex.pdf
    • http://abesoutfitters.com/uploads/1/3/0/2/130271214/a5a383139.pdf
    • http://beingself-centered.com/uploads/1/3/0/7/130776409/130776409.html#artist+cv+template+word+free

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001317.bin
0127dfff5d1211c95f9f322df135b602500c0492e8d5901df82f79856c006d89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1317 8616 bytes
font_01_sfnt_off00008790.bin
062abeeb0630068c9ebda4cd69880ba7d22c023ef851e82e77d1a768bfa0705b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8790 17648 bytes

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