Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2cda357dc094a8d…

MALICIOUS

PDF

37.3 KB Authoring application: Mobipocket Creator
MD5: 063d9ae4fd1b2873deda54d7928dd494 SHA-1: d4cb148ef7943e1eebce557eb7eedeaac28c8c44 SHA-256: c2cda357dc094a8dd9d2368eb0ab9ec3e6d338a452d6a6ce3a38c8ccff957364
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 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 or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution.

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.henrycollierjournalism.co.uk/uploads/1/3/0/6/130621060/dakosigipir.pdf
    • http://askchum.com/uploads/1/3/0/5/130550967/6230790.pdf
    • http://daytonheritagemuseum.org/uploads/1/3/0/3/130379625/8673446.pdf
    • http://avawhiteman.com/uploads/1/3/0/4/130489572/birojevemoremujejo.pdf
    • http://bedwick.com/uploads/1/3/0/7/130740616/viwez.pdf
    • http://flatlandtrailrunner.net/uploads/1/3/0/2/130274151/1138634.pdf
    • http://indieboomfilmfest.com/uploads/1/3/0/6/130639567/4960547.pdf
    • http://ttcasfriendsandfamily.org/uploads/1/3/0/6/130639068/dc9159c3.pdf
    • http://mightykidshealth.com/uploads/1/3/0/5/130552016/4a684d1aded6bae.pdf
    • http://bloomingdalecorporatecenter.com/uploads/1/3/0/6/130620594/woviwesiwola.pdf
    • http://www.littleslearning.ca/uploads/1/3/0/3/130323709/4196407.pdf
    • http://mail.gjs.as/uploads/1/3/0/6/130605307/pavosatak_rowapade_wutefuw_namil.pdf
    • http://learnsoccer.org/uploads/1/3/0/5/130541116/1217356.pdf
    • http://qpd6s6.bdgct.com/uploads/1/3/0/6/130604402/130604402.html#african+cup+of+nations+2019+fixtures+table

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000388e.bin
df5e85dc11162497ef6c92753dce531577835d113d0f2ca3bca0890a81bfdad0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x388E 8228 bytes

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