Malicious PDF — malware analysis report

Static analysis result for SHA-256 f81c59da7f6bf10e…

MALICIOUS

PDF

33.3 KB Authoring application: LibreOffice
MD5: 7b207227e1af4bea03b5d9111fcb8938 SHA-1: ee3e9ecd1bbe24c71e216c62a67ade310a36bdaf SHA-256: f81c59da7f6bf10e062bf88ad14027abfbfe53124d3e2433505dd1470746fac2
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. This suggests a tactic to manipulate search engine results or distribute malicious content through a link farm. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or traffic redirection intent. No scripts were extracted from this sample.

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://www.transmac.nl/uploads/1/3/0/8/130874544/8754990.pdf
    • http://pchelpnsupport.com/uploads/1/3/0/6/130605278/womididevugefaza.pdf
    • http://dichvuseowebsitehanoi.com/uploads/1/3/0/6/130620747/fovewowe.pdf
    • http://bcollectiveboutique.com/uploads/1/3/0/2/130288757/bexuriguzab.pdf
    • http://www.prudencemoonweather.com/uploads/1/3/0/6/130640104/pipibunanaladom.pdf
    • http://msbthriftshop.com/uploads/1/3/0/3/130323164/lekuv.pdf
    • http://nachomamanc.com/uploads/1/3/0/7/130775111/nizififepuvebi_foberaxulizedan_dubor_judobulef.pdf
    • http://sedcorp.net/uploads/1/3/0/6/130605133/merowovusozotejaj.pdf
    • http://zgswoodcrafting.com/uploads/1/3/0/7/130776425/ruzavexorumixavuku.pdf
    • http://aquaponics-mart.com/uploads/1/3/0/6/130620449/turupesomofewed_tamefifadepiper_taxuduju.pdf
    • http://www.treasuredboxesstudio.com/uploads/1/3/0/6/130620423/kapunoxojo.pdf
    • http://autodiscover.ldavismunro.com/uploads/1/3/0/5/130590154/130590154.html#similarities+and+differences+between+aicpa+and+pcaob

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c7c.bin
8389de77ad8e032da8b97ca3618bedea1e522d81a0b7369658cd6c97e9b85237		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7C 7208 bytes

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