Malicious PDF — malware analysis report

Static analysis result for SHA-256 e955a45f8cf9d686…

MALICIOUS

PDF

42.5 KB Authoring application: PDF Studio
MD5: 6cd0f5b816b3fb410e14dcc17e174041 SHA-1: cbf485a03937d9be38aa7b5ea3f6b01d1c911cf5 SHA-256: e955a45f8cf9d68646428bc6fba3876a2a3f3be381e97d183ab6e4cb736416b1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1566.002 Phishing: Spearphishing Link

The PDF file was detected by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a large number of embedded external links, indicative of a link farm designed for SEO poisoning or to direct users to malicious sites. The document body contains text related to plant cells, which appears to be a lure to disguise the malicious nature of the PDF.

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://plumbingleakprotection.com/uploads/1/3/0/2/130291416/xawofib.pdf
    • http://misspeggysdogwalking.com/uploads/1/3/0/6/130620590/11ee4be2eed.pdf
    • http://welcometo6h.com/uploads/1/3/0/5/130589035/gijiwot_relus_jofikof_nafija.pdf
    • http://bestdryerballs.com/uploads/1/3/0/5/130590555/gerud.pdf
    • https://toxofumumoxuf.weebly.com/uploads/1/3/0/3/130323888/webedawelejiv.pdf
    • http://mundofeliz.es/uploads/1/3/0/4/130436226/5868817.pdf
    • http://clickpayservices.com/uploads/1/3/0/5/130543084/zalesedoxoxug-xojopokatoxe-ketaramugarudu-lapix.pdf
    • http://pirettes.net/uploads/1/3/0/4/130477252/pibatixosifori.pdf
    • http://womubovo.sisinfdoctum.tech/uploads/2020/01/29/pewow.pdf
    • http://potusnewschannel.com/uploads/1/3/0/2/130270798/wajumozagezati.pdf
    • http://ntcigraffiti.com/uploads/1/3/0/4/130483454/130483454.html#cells+alive+plant+cell+worksheet+answers+key

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000132a.bin
bd3d6d40de4d708ec0952e67346d9c9f7fc10e7c29fa5c367bb07c6da8f396dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x132A 9036 bytes
font_01_sfnt_off00006b17.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B17 2652 bytes

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