Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ae556d3fd2ecde…

MALICIOUS

PDF

35.1 KB Authoring application: Soda PDF
MD5: a89767c696d1421ff081b6c0ebb4855c SHA-1: 7e241f0aa736834b033071e931998c4c78f57335 SHA-256: f8ae556d3fd2ecde8977192a61696049bedcddf117123c3859c8788d65d97e34
170 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files hosted on various domains. One critical heuristic identified this as a 'PDF_SEO_LINK_FARM', indicating a likely attempt to manipulate search engine results or distribute malicious content. The presence of a raw IP address in a URI further supports malicious intent. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly suggests a phishing or traffic-generation campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://manelabedasura.weebly.com/uploads/1/3/0/5/130543310/2a370b3d56.pdf
    • http://pob.gruzodelov.ru/uploads/2020/01/28/sibadi.pdf
    • http://introducingashley.com/uploads/1/3/0/5/130539350/vutop.pdf
    • http://tren.net/uploads/1/3/0/6/130620693/sejajajomom-sumefetaf-jidolelefo-lodalomenajora.pdf
    • http://95.217.124.67/uploads/2020/01/27/gatogupuwuri.pdf
    • http://apccrc.net/uploads/1/3/0/4/130483343/wuvimuwenisox.pdf
    • http://quillesthon.com/uploads/1/3/0/3/130379462/xikibisumifajokitufe.pdf
    • http://acarroll-wallace.com/uploads/1/3/0/2/130287813/2798509.pdf
    • http://worthwhileglass.com/uploads/1/3/0/4/130489044/majejut-fopepubadusik-gebewazel.pdf
    • http://kusoseduf.intropack.ru/uploads/2020/01/28/be642b9.pdf
    • http://neokundalini.org/uploads/1/3/0/5/130551248/130551248.html#dfp+services+durham

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012f5.bin
1ce85b4851e062cf45755334fe6afd14714f62e65bfbad70ead4ad068e0db145		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F5 10108 bytes

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