Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aa2b265cc786d49…

MALICIOUS

PDF

59.2 KB Authoring application: pstoedit
MD5: c168dea0a407bdfa4fa706cf76b94b13 SHA-1: 44b9d9f30702bbb9078fdcd31d2b0bfa3dd31bd5 SHA-256: 4aa2b265cc786d4934540f56023c6c920972bd18950c2b35efe4f05a4c40dac8
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO spam or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body contains text related to diet plans and includes several URLs, reinforcing the link farm heuristic.

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://commongroundsphilly.com/uploads/1/3/0/7/130775045/1760766.pdf
    • http://medfordpremiermarketing.com/uploads/1/3/0/7/130776205/zolupatulexa.pdf
    • http://www.vinyasawithbenandrianna.com/uploads/1/3/0/4/130483200/sefefud.pdf
    • http://andrewwarnerdogtraining.com/uploads/1/3/0/6/130639251/tesexafufubeja.pdf
    • http://mta-sts.mx0.perichoresis.de/uploads/1/3/0/6/130621788/kigarom_wizixatis_duxojap.pdf
    • http://www.penninsulatech.com/uploads/1/3/0/9/130969858/c5d324.pdf
    • http://batteryconservancy.org/uploads/1/3/0/4/130476462/xefofol.pdf
    • http://what2doabq.com/uploads/1/3/0/2/130289232/333e1fefe4c3.pdf
    • http://alibraryandagarden.com/uploads/1/3/0/6/130603743/poxewajopuduzi.pdf
    • http://aquastony.com/uploads/1/3/0/9/130969343/3578363.pdf
    • http://abmlimited.com/uploads/1/3/0/3/130323624/kalibu_bulirez_pasovab_lapupodazasife.pdf
    • http://bve.local.stockmi.com/uploads/1/3/0/5/130540937/wewumatudidudugon.pdf
    • http://aoodri.com/uploads/1/3/0/6/130639712/ruxisexutomila.pdf
    • http://myrobynscreations.com/uploads/1/3/0/2/130271139/2f28a6b07c.pdf
    • http://muellerhomeenvironment.com/uploads/1/3/0/6/130639205/pogabema.pdf
    • http://host3.carmichaelnl.com/uploads/1/3/0/2/130289305/130289305.html#keto+diet+plan+online+india

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001440.bin
87fd0f4b61d3c534f6d386e2cd52ab2771cfbf141a9cdbd677441cb8e281a91b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1440 9016 bytes

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