Malicious PDF — malware analysis report

Static analysis result for SHA-256 6584183437b9c186…

MALICIOUS

PDF

34.8 KB Authoring application: Mobipocket Creator
MD5: 43fea1b79d06c1b61517d5abd88c7ca3 SHA-1: 6c4b6cec1f580bb1954d09b6e358c5414b518b5d SHA-256: 6584183437b9c18675b30e2835b79498c1d4f53a5c6d36605894e863eef856b7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or a method to distribute additional malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or SEO abuse.

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://www.favoritzrestarauntandlounge.com/uploads/1/3/0/5/130547515/6ace6a983457.pdf
    • http://dreamcatalyst.org/uploads/1/3/0/8/130813777/bagigelumak.pdf
    • http://theindoorhockeyleague.com/uploads/1/3/0/6/130604441/gawoki-sadizikopijabug-fodilowa.pdf
    • http://www.tetelestaiwhitefish.com/uploads/1/3/0/6/130621814/bugigugorekofe.pdf
    • http://hittingthespiritualwall.com/uploads/1/3/0/5/130589400/4316200.pdf
    • http://www.kidscreateandplay.com/uploads/1/3/0/9/130969527/e59bc0d7.pdf
    • http://desatascosviladecans.com/uploads/1/3/0/8/130813953/ec72a9d12c4a96e.pdf
    • http://abrprojectsaustralia.com.au/uploads/1/3/0/4/130435702/tilisejekuwubijovoko.pdf
    • http://localbitprice.com/uploads/1/3/0/7/130776592/765352.pdf
    • http://acceleratefacilities.com/uploads/1/3/0/7/130776805/36ccb2a0e179.pdf
    • http://www.wilari.com/uploads/1/3/0/7/130738719/zuvud-gonatapi.pdf
    • http://viajantepassoapasso.com/uploads/1/3/0/3/130313106/130313106.html#how+to+convert+a+pdf+to+ppt+for+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003003.bin
a3ef59602075d74cfaec338e14ad6377bc2bf8f05c0f4f632b87550053f3db8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3003 8164 bytes

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