Malicious PDF — malware analysis report

Static analysis result for SHA-256 713b7cfb724313ae…

MALICIOUS

PDF

53.9 KB Authoring application: PDF Studio
MD5: febbd3214748a6e05f5471f58760939e SHA-1: c8ac1f181622f135a4f7deea4e1e11bc6cd24e13 SHA-256: 713b7cfb724313ae22571276f8c0ed60ebbbc76b02f8354da0f664806f6aea36
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also flag this file as malicious, specifically as phishing or a robot installer. While no scripts were explicitly extracted, the presence of numerous links suggests a redirection or download attempt, likely to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://carbonproductions.co.uk/uploads/1/3/0/6/130603785/nalifugojaripad-gevemilezebibek-tisol.pdf
    • http://lafabriquededessins.com/uploads/1/3/0/6/130639296/ee3288a0a6546.pdf
    • http://galenetics.com/uploads/1/3/0/5/130589182/6764866.pdf
    • http://mishevski.de/uploads/1/3/0/5/130550762/kagupop.pdf
    • http://glamisog.com/uploads/1/3/0/3/130323672/rejejipes.pdf
    • http://vaf.ponoxy.store/uploads/2020/01/28/fimopusax.pdf
    • http://nursingarmpillow.com/uploads/1/3/0/2/130289595/130289595.html#bodyweight+fitness+beginner+routine+reddit

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001140.bin
841a6ea687ba0bc16b2ba450e5229b0d863a881a451b1eec4e7ebb1308b0b0c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1140 9024 bytes

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