Malicious PDF — malware analysis report

Static analysis result for SHA-256 35a76ce227d1c65d…

MALICIOUS

PDF

35.3 KB Authoring application: ImageMagick
MD5: 99c5e91bd23c5e8cb8bf1bfa8115f1d4 SHA-1: 87f7c1f9e65849e0222bc8d875147c1ae9e1e3e9 SHA-256: 35a76ce227d1c65d855d1182c3ee1b6883af7ba19c485be2dcc4e66473d037bb
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a phishing or SEO manipulation tactic, where the goal is to drive traffic to a network of linked documents. The ML classifier and ClamAV detection further support the malicious nature of this file. 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://cutek.org/uploads/1/3/0/4/130476346/gusibudegif.pdf
    • http://lifestylescan.org/uploads/1/3/0/2/130291786/71f970e652d.pdf
    • http://mta-sts.mail.mantorvillain.com/uploads/1/3/0/4/130488839/a086438b1791.pdf
    • http://icost-registration.com/uploads/1/3/0/5/130588778/lebanetiborozu-mikatibedonomo-litawizuzi.pdf
    • http://michelhb.com/uploads/1/3/0/2/130274199/kevijanunuzig_kuwigi_fusejobopug_dakoxodu.pdf
    • http://n0.net/uploads/1/3/0/6/130640229/jozozukakomewev.pdf
    • http://breaktheatre.com/uploads/1/3/0/5/130545447/658c9cd.pdf
    • http://autodiscover.motionfit.si/uploads/1/3/0/4/130492963/b0cfbc0ad61.pdf
    • http://waltschlender.com/uploads/1/3/0/4/130476657/jilepaludeje.pdf
    • http://mychef2go.com/uploads/1/3/0/7/130776617/4837227.pdf
    • http://minimelism.com/uploads/1/3/0/6/130620865/a7e70b.pdf
    • http://noahopper.com/uploads/1/3/0/2/130270804/megox_wakuga_lelaxesowot_xalus.pdf
    • http://www.poulsborvspecials.com/uploads/1/3/0/2/130271096/rowip-polawisulalugu.pdf
    • http://zhajinhuayouxidatingxiazai.br3h.com/uploads/1/3/0/4/130435658/130435658.html#glencoe+algebra+1+chapter+9+test+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002da2.bin
b0932facb053b652d32d65df8c1740ac66fa4a32eaf10e7f38b9d68cd376df83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA2 9212 bytes

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