Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd6658680fdec419…

MALICIOUS

PDF

104.8 KB Authoring application: PDFBox
MD5: c2baf692b454b8011282d47fe44f7dc0 SHA-1: fee8a7409bf6bb8c04ad9b37befa6d338be45c39 SHA-256: cd6658680fdec419452b7f61f1d1356def4f291e828d6fe6da68698ed6cb1755
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a phishing or malware distribution attempt. The document body, though partially garbled, mentions 'Diseño de maquinaria norton 4 edicion solucionario' and includes multiple URLs pointing to PDF files, reinforcing the lure. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing context.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://misfotografie.de/uploads/1/3/0/5/130550847/busapisifixumuvebi.pdf
    • http://susanfisherart.com/uploads/1/3/0/2/130289278/xetolirojexo.pdf
    • http://demolitiondownersgroveil.com/uploads/1/3/0/6/130639061/4911051.pdf
    • http://basilicainvestors.com/uploads/1/3/0/5/130541137/f8084d.pdf
    • http://xesawusiru.giperstimulyatsiya-pri-eco.ru/uploads/2020/01/29/caa4c75dc9b7.pdf
    • http://mindsets.net/uploads/1/3/0/5/130539494/50451.pdf
    • http://denusarosu.pnptogo.com/uploads/2020/01/29/nanote.pdf
    • http://restaurantatburdicks.com/uploads/1/3/0/4/130478004/vibaxetagozasi.pdf
    • http://rebeccalaplacaattia.com/uploads/1/3/0/6/130603710/130603710.html#dise%C3%B1o+de+maquinaria+norton+4+edicion+solucionario

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001414.bin
aa0c460e8357e3193049c848f9ff7e69c89cb356638f9eaac91614e88ec3bbaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1414 11356 bytes
font_01_sfnt_off0000f59a.bin
cd81adbf9b66ddd754302eb5eade34eb959b8bded8113e60e948199dbb641de8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF59A 3096 bytes

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