Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f7427cc861e46e9…

MALICIOUS

PDF

38.2 KB Authoring application: Pdftk
MD5: 8fca1f965f925cbfa93b03991ac901e7 SHA-1: 4c1754da0d21f26e46ee38dd9cbe98165ed76c69 SHA-256: 0f7427cc861e46e90a77b8230248e3a12b96d6ae61dede3dba79e612053239f5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are the primary indicators of compromise, suggesting a phishing or content distribution scheme.

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://senatorpiacayetano.com/uploads/1/3/0/6/130620763/xanaxuterot.pdf
    • http://attorneys-lawfirmsuseretiredattorneys.com/uploads/1/3/0/3/130323811/b93843b977574e1.pdf
    • http://portraitsformodernpeople.com/uploads/1/3/0/2/130291552/7f3855.pdf
    • http://christianrmcdaniel.com/uploads/1/3/0/6/130604627/d1ec1239ef68.pdf
    • http://namyangitaly.com/uploads/1/3/0/5/130539414/lakepivojebo.pdf
    • http://maskcarabeautycolormatch.com/uploads/1/3/0/7/130740612/gulopifogumovi_fozesuwawiviza.pdf
    • http://puppylovepetcarema.com/uploads/1/3/0/6/130620510/nazedifit-molofukuxadiz-woviduzoj.pdf
    • http://eowe.xyz/uploads/2020/01/29/2488413.pdf
    • http://untameddemure.com/uploads/1/3/0/6/130604708/werawakavewenubunumi.pdf
    • http://melaniedaylelauren.com/uploads/1/3/0/5/130551179/jejinuzurinoga-netifugez-runatowitunux.pdf
    • http://nursingarmpillow.com/uploads/1/3/0/4/130476396/130476396.html#tratamiento+actual+de+la+diabetes+mellitus+tipo+2+scielo

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001342.bin
13e62ad204ce833a6ce09f4c7dce817731cb09ee782835927a11c7d4e9eac8b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1342 9196 bytes

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