Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1c1ffbfe9f81d74…

MALICIOUS

PDF

48.6 KB Authoring application: Soda PDF
MD5: db0d0902ff6da5843042fa9dc5aebbab SHA-1: fa1d791121d078eabea1d03f67e82b7794cc4565 SHA-256: f1c1ffbfe9f81d7465018093d516ea0938c42cbd64edb169ed5dcdcd2003a247
150 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and a machine learning classifier returned a high malicious score. The critical heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, with the primary one being http://alohawraps.co/uploads/1/3/0/5/130538941/5655107.pdf. The document body, though heavily obfuscated, contains references to these URLs, suggesting a phishing or malicious redirection scheme.

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 http://alohawraps.co/uploads/1/3/0/5/130538941/5655107.pdf
    • http://notariasociati.com/uploads/1/3/0/2/130273733/7429320.pdf
    • http://xefuw.intelectovirtual.com/uploads/2020/01/28/ximamuderuwegig-fudimoduzufaxid-lumenate.pdf
    • https://jujepefigew.weebly.com/uploads/1/3/0/5/130547405/ropevemufogu_fijorekemu_pomowomapi_mofefafil.pdf
    • http://jixumik.shoplrr.info/uploads/2020/01/28/8626444.pdf
    • https://xilozutife.weebly.com/uploads/1/3/0/4/130493893/jaxuzake.pdf
    • http://ndtasanantonio.org/uploads/1/3/0/6/130640033/130640033.html#list+of+all+acids+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001321.bin
edd43276f1a0bed94cdfd4360fd70f220c8fdb8e2fbddc07228d8900f1237474		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1321 9104 bytes
font_01_sfnt_off000080f1.bin
ac583b3be015371b77a97100190c157329312edcfdb0db62a8bcc86278da0014		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80F1 3620 bytes

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