Malicious PDF — malware analysis report

Static analysis result for SHA-256 7adee9b6b560c5d9…

MALICIOUS

PDF

29.7 KB Authoring application: Mobipocket Creator
MD5: 226fb2a611894cf1574f835fb9fb9253 SHA-1: 98ca36b4406762bd255f0e0c41340d653a49e0c8 SHA-256: 7adee9b6b560c5d912a340b37d563c7a21c3187caaf233824825117ed47a22cb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links to other PDF files hosted on various domains, indicative of a link farm or SEO poisoning attack. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The embedded URLs are the primary indicators of compromise, pointing to potential second-stage payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://tromboneandy.weebly.com/uploads/1/3/0/6/130604549/0598b6947.pdf
    • http://chloehorie.com/uploads/1/3/0/6/130621301/32bc6bf4304.pdf
    • http://passporttolbi.net/uploads/1/3/0/8/130874016/dorolexuvizola.pdf
    • http://easyfootcare.com/uploads/1/3/0/4/130436159/dunubikuwego.pdf
    • http://mismedicos.net/uploads/1/3/0/4/130476244/4770057.pdf
    • http://realmsofreflections.com/uploads/1/3/0/6/130604924/vowumepaza.pdf
    • http://nursingarmpillow.com/uploads/1/3/0/7/130775372/130775372.html#office+12.0+access+database+engine+ole+db+provider

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010d9.bin
6d2c2160b0efdab26caf85bf66f01a6e875cac4c8547fa612b5920a704be907e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D9 7692 bytes

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