Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea28d3ceb4a43c7e…

MALICIOUS

PDF

35.1 KB Authoring application: PDFedit
MD5: 2c2419778e5fb4272c017c56057b0f27 SHA-1: 971e58707795ece2fff449b2e6dc7cbdccdd96c8 SHA-256: ea28d3ceb4a43c7e2165e4b38cf03c50dd881fae66822156688afa7706379b37
152 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, indicating a link farm or distribution mechanism. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly suggest this is a phishing or traffic-driving scheme. The document body text is largely unreadable due to encoding issues, but the presence of URLs and the heuristic firings are sufficient to determine the malicious intent.

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://mylifebuilder.com/uploads/1/3/0/5/130588611/zujuxov.pdf
    • http://happybirthdaylizs15th.com/uploads/1/3/0/6/130620572/9b1554ed4cbdd2.pdf
    • http://tallahasseespraywash.com/uploads/1/3/0/7/130739423/043cd25e585.pdf
    • http://danicagoward.com/uploads/1/3/0/4/130476078/b8f2710e40d.pdf
    • http://javari.net/uploads/1/3/0/6/130604934/6207064.pdf
    • http://carlamaebailey.com/uploads/1/3/0/8/130814345/647788.pdf
    • http://briansherrishow.org/uploads/1/3/0/6/130639071/5373302.pdf
    • http://www.invstrs.nl/uploads/1/3/0/7/130775221/gemotakosamepupe.pdf
    • http://misscannabismovie.com/uploads/1/3/0/3/130379380/c007c47bdf28d26.pdf
    • http://www.jillcohen.iaany.org/uploads/1/3/0/4/130476642/d8815db.pdf
    • http://nikolasstrubbe.com/uploads/1/3/0/7/130775751/vutupivi.pdf
    • http://oxhxo.net/uploads/1/3/0/8/130814731/1332214.pdf
    • http://abra-maquillos.com/uploads/1/3/0/3/130379422/bujil.pdf
    • http://www.1210photography.com/uploads/1/3/0/7/130739766/zarow.pdf
    • http://dpaulart.com/uploads/1/3/0/5/130543980/6a76a0960.pdf
    • http://adtest.site/uploads/1/3/0/7/130740461/wowafozujit-zagipuzejuwa-rukexesawanaju.pdf
    • http://www.irishancestralhomes.com/uploads/1/3/0/5/130545254/6846190.pdf
    • http://795.bpmtc.com/uploads/1/3/0/6/130639205/130639205.html#rust+oleum+multi+purpose+paint+sds

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b94.bin
3099a413fe4737a5a80f4cee255245976e894a0ca99a20afba61b04dced5eb86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B94 8280 bytes

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