Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a44c10b1d326796…

MALICIOUS

PDF

38.0 KB Authoring application: OpenOffice.org
MD5: 283d9c32c832180baf342efe89287502 SHA-1: ec1e3bcf249ee22b743036bf298ee36b40b414d3 SHA-256: 2a44c10b1d326796142848d8c368a4d9325d6852c660b8a8238633a8c7752578
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as phishing and traffic redirection. The embedded URLs point to suspicious domains, likely serving as part of a link farm or redirection chain to deliver further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://social-promotion.ru/uploads/2020/01/28/741a05668.pdf
    • http://cortkrekoullc.com/uploads/1/3/0/6/130639334/1b77c.pdf
    • https://getuforuz.weebly.com/uploads/1/3/0/4/130483445/6789908.pdf
    • http://stagesphere.com/uploads/1/3/0/5/130539516/5222727.pdf
    • http://actscommunitychurches.com/uploads/1/3/0/4/130483799/d1687d.pdf
    • http://narrinspiceandsauce.com/uploads/1/3/0/5/130551270/piwabudik_luwiv_jogesepopuvigim_wunisafozip.pdf
    • http://mmpe.cn/uploads/1/3/0/7/130738591/tafaxed.pdf
    • http://kotdobryak.site/uploads/1/3/0/5/130541000/b024218.pdf
    • http://nuobeijinghotel-chinese.devsite-1.com/uploads/1/3/0/6/130622110/130622110.html#avmap+iv+manual
    • http://regiond.swe.org/uploads/1/3/0/3/130323091/7187471.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011c6.bin
de2c7d5e6979a2ec5351f8ce489bb0b42a2884feb7306eee36a9d3e84d5bb86b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C6 8316 bytes

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