Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2386a55cc24294e…

MALICIOUS

PDF

35.6 KB Authoring application: ImageMagick
MD5: bfb9c69daf9801eb6a024d8bce4f2dd2 SHA-1: 7e3e01867de056eec6ea2f7d1cfad7e69b484356 SHA-256: b2386a55cc24294ed5fa95574cb63e90d253ec22fa7035be35d66f752ca20f95
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, identified as a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or SEO abuse. The document body, though heavily truncated and containing non-readable characters, includes the phrase 'Is there a cure for addison's disease in dogs', suggesting a lure to attract clicks to the linked PDFs.

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://tigerfoam.net/uploads/1/3/0/4/130483426/8883731.pdf
    • http://beautesache.org/uploads/1/3/0/3/130313086/905a3.pdf
    • http://theshilo.com/uploads/1/3/0/7/130775263/94123.pdf
    • http://locksmithracine.com/uploads/1/3/0/5/130589184/kejofiwegus-vepamepefaru-zafolole.pdf
    • http://paraliabeachhouse.com/uploads/1/3/0/3/130323479/kenumodebapizu.pdf
    • http://craftsmanplumbing.net/uploads/1/3/0/3/130379342/wekita.pdf
    • http://durangopodcasting.net/uploads/1/3/0/4/130476192/vufegagonetilagik.pdf
    • http://www.modestlymade.com/uploads/1/3/0/6/130603704/4652743.pdf
    • http://www.clikresume.com/uploads/1/3/0/5/130539944/luruw.pdf
    • http://ilearnfaster.com/uploads/1/3/0/5/130588675/3667111.pdf
    • http://fxu14.bpmtc.com/uploads/1/3/0/7/130738710/130738710.html#is+there+a+cure+for+addison%27s+disease+in+dogs

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000362b.bin
4d1dec6c4ab9f7297283731e16b7e78f8a93a6dccc639da49f7e83fbb58bfda9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x362B 7600 bytes

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