Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed76e9045d52f3d6…

MALICIOUS

PDF

36.6 KB Authoring application: Scribus
MD5: 19f5312276373aa1212bb1896df30b3e SHA-1: 60c0aaf9b419c3cc11203a7ba8612fc67973d044 SHA-256: ed76e9045d52f3d621dcc11960efb21beda634093b523c7accd3dcc84f195e86
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The critical PDF_SEO_LINK_FARM heuristic indicates the presence of a large number of external PDF links, with the primary domain being lakefieldbaptistchurch.org. This suggests a link farm or redirection scheme designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://lakefieldbaptistchurch.org/uploads/1/3/0/5/130589249/9e750ebcc7a.pdf
    • http://mygraphicdesignteam.com/uploads/1/3/0/3/130323164/1094982.pdf
    • http://sustainguitar.com/uploads/1/3/0/5/130542968/8469042.pdf
    • http://lambertservisi.com/uploads/1/3/0/4/130477278/521320735.pdf
    • http://vepud.alianzaamericanadecolombia.com/uploads/2020/01/28/0b9690c1f09a59.pdf
    • https://zilukepezos.weebly.com/uploads/1/3/0/5/130588214/baresitubit_zimopunog_lanotof_voresegil.pdf
    • http://jkjlawnsprinkler.com/uploads/1/3/0/5/130539340/b0f4f38bfac80d.pdf
    • http://molletenglishconsulting.com/uploads/1/3/0/3/130313091/makebel-zoberapi.pdf
    • http://bartolomeilaw.com/uploads/1/3/0/5/130539370/130539370.html#earth+the+biography+atmosphere+video+answers

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013ca.bin
3a6ad7499983cef17896edfb29eb5ece4780457a3f19d9330487c707d53b6e4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CA 8256 bytes
font_01_sfnt_off00004854.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4854 16036 bytes

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