Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfbdc754f2eb9fbf…

MALICIOUS

PDF

43.2 KB Authoring application: pdf-parser
MD5: cc03253653a64345dc9ba3f61794185a SHA-1: a35acac9b65414fde4eeb3c5b525b4a8f14a0e8a SHA-256: cfbdc754f2eb9fbff4699916c5a0250e5b759f1fa2c643a7a23a23b47ff66558
150 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical finding for a link farm containing 24 external PDF links. The ML classifier also assigned a high probability of maliciousness. The document body contains numerous URLs pointing to other PDF files, suggesting a redirection or download scheme. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 https://lodosaxudol.weebly.com/uploads/1/3/0/3/130313086/b9fe45a0.pdf
    • http://jogo.magic-kailas.ru/uploads/2020/01/29/repene.pdf
    • http://pepctest.org/uploads/1/3/0/6/130605217/3e09c1fb0486e91.pdf
    • https://vigixaxafozeb.weebly.com/uploads/1/3/0/5/130590661/8135942.pdf
    • http://berkeleyfpdocs.com/uploads/1/3/0/5/130590770/1356425.pdf
    • http://ketooozy.com/uploads/1/3/0/4/130435833/3368311.pdf
    • http://james-read.com/uploads/2020/01/29/fibowesizuz.pdf
    • http://neurotherapycenterva.com/uploads/1/3/0/3/130313541/zejirezamebepabo.pdf
    • http://supercontinent.weebly.com/uploads/1/3/0/5/130551089/vudax-debamobure-fipemagajaxifa-dokitujevev.pdf
    • http://suerayreads.com/uploads/1/3/0/2/130272551/9888034.pdf
    • http://christianrmcdaniel.com/uploads/1/3/0/6/130605036/kusaz-fironelutoxo.pdf
    • http://accuplus-parkour.com/uploads/1/3/0/5/130543418/5354935.pdf
    • http://gomriz.com/uploads/1/3/0/4/130435875/130435875.html#volumen+globular+medio+alto+en+ni%C3%B1os

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000133c.bin
18c5e55568eaafd4f50f8a84d9edd34640ce33613ec99b1e3eb31899f62fad1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x133C 9036 bytes

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