Malicious PDF — malware analysis report

Static analysis result for SHA-256 90860adc6cb4ebed…

MALICIOUS

PDF

29.4 KB Authoring application: Mobipocket Creator
MD5: dae76741a36a3467024268451632983a SHA-1: e1145334cf329e60d3803659938ea944ac07f21e SHA-256: 90860adc6cb4ebed4bd323cdae28a6fb18956a08321fa9cad34e85f2b98f07be
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also strongly suggest malicious intent. The embedded URLs point to a network of sites, likely used to host further malicious content or phishing pages. No scripts were extracted from this sample.

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://usedcarsfortrade.com/uploads/1/3/0/4/130489006/4580745.pdf
    • http://oasischronicles.com/uploads/1/3/0/8/130813658/2422097.pdf
    • http://luguimaraes.com/uploads/1/3/0/5/130539797/davagopo.pdf
    • http://cpanel.faisalkababhut.com/uploads/1/3/0/6/130621758/jexuma.pdf
    • http://missycampmusic.com/uploads/1/3/0/2/130273733/jivukuxiwo.pdf
    • http://www.latinapromotions1.com/uploads/1/3/0/6/130620234/3370678.pdf
    • http://adrienneodell.com/uploads/1/3/0/3/130324050/nudojexidasolu.pdf
    • http://b-24-thegreenhornet.net/uploads/1/3/0/4/130483286/wipafi.pdf
    • http://aphroditessecrets.com/uploads/1/3/0/9/130970023/3055786ed5a.pdf
    • http://jcsquared.net/uploads/1/3/0/6/130605254/912f66a8.pdf
    • http://candicebrodie.com/uploads/1/3/0/4/130483682/2bf5fb3.pdf
    • http://humanismandculture.com/uploads/1/3/0/6/130620624/5120523.pdf
    • http://myhealthcoachusa.com/uploads/1/3/0/6/130640220/genuku.pdf
    • http://queensrollingdoor.com/uploads/1/3/0/6/130639745/1466523.pdf
    • http://billionsstreet.store/uploads/1/3/0/4/130483469/fapunorobef_jikupefiwenuj.pdf
    • http://www.thenannysden.com/uploads/1/3/0/9/130969407/130969407.html#another+day+in+paradise+piano+lesson

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001991.bin
d1dcb58c76bc14b17be7db2bc1da145be1b8d257ecc4b0abb0ee2bbf508c146e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1991 7304 bytes

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