Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f2865d9b8b1f0a…

MALICIOUS

PDF

34.7 KB Authoring application: Nitro PDF
MD5: 89d1116289de90dbe92a7bfae417a65f SHA-1: e563dca8501bb624efa53ea2eb71290460af3033 SHA-256: 03f2865d9b8b1f0adabe42a4a0067b23f46b8f56c8466a26ef9d96398c033cb1
152 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, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. These links point to various PDF files hosted on different domains, suggesting a tactic to manipulate search engine results or distribute further malicious content. The ML classifier and ClamAV detection strongly support its malicious nature.

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://redmaplecelpipedu.com/uploads/1/3/0/7/130739761/zupiniwigetaz_vitules.pdf
    • http://hightowerinspections.com/uploads/1/3/0/5/130551427/7808877.pdf
    • http://buyerstreasure.com/uploads/1/3/0/7/130739697/xopibonudosezizigo.pdf
    • http://ligueusa.net/uploads/1/3/0/7/130775690/vukumubajamigul-vuzozesesugezaj-figemavekizo.pdf
    • http://ctatherapy.com/uploads/1/3/0/2/130271063/9063009.pdf
    • http://www.bestricher.com/uploads/1/3/0/4/130476572/74a731b69.pdf
    • http://vveezz.com/uploads/1/3/0/6/130621840/5b3a2f8.pdf
    • http://emojeetravel.com/uploads/1/3/0/5/130543980/1301179.pdf
    • http://caliparks.org/uploads/1/3/0/6/130620674/dd4a774a7.pdf
    • http://nammoi.net/uploads/1/3/0/6/130639933/getemotun.pdf
    • http://pivotallist.com/uploads/1/3/0/6/130639436/6862650.pdf
    • http://weefestival.com/uploads/1/3/0/4/130436410/5804873.pdf
    • http://www.arizonainhomepeteuthanasia.com/uploads/1/3/0/3/130379272/7216527.pdf
    • http://crescentheightsmidatlantic.com/uploads/1/3/0/8/130874629/vozet.pdf
    • http://jettscreativezone.com/uploads/1/3/0/6/130621215/2253375.pdf
    • http://houstonofficespace.net/uploads/1/3/0/6/130605080/tiwonojidirusilefuvu.pdf
    • http://houstonasta.voyagerwebsites.com/uploads/1/3/0/6/130604433/130604433.html#definicion+de+cancer+pulmonar+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002cb8.bin
ed712789e91634ac79bee5277bafee23b62fc7a446bbc8e0c726ac15c4c3edff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB8 8056 bytes

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