Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c49a1a2b5d2e419…

MALICIOUS

PDF

35.5 KB Authoring application: Serif PagePlus
MD5: 41a1c013b17ca5e7503fccb44a4a48d1 SHA-1: 76ab90a1aa5c448edc85f9a75f0ccd302374b014 SHA-256: 7c49a1a2b5d2e4199d59a5ce8d64eeec6f75ef30699e71bbc5903c28e1a9677f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique commonly used in phishing campaigns to direct users to malicious websites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection intent. The document body itself is heavily obfuscated and contains a mix of readable text and what appears to be junk data, but the embedded URLs are clearly visible and are the primary indicators of malicious activity.

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://negsbestthing.com/uploads/1/3/0/6/130639901/2364537.pdf
    • http://mesys-industrial.net/uploads/1/3/0/6/130622116/kamuvovetuz-runuwe-zevenabu-guzijukaf.pdf
    • http://ninecriticalmonths.com/uploads/1/3/0/3/130323616/2548085.pdf
    • http://mtmsmusic.com/uploads/1/3/0/5/130542829/nefegomufodizor.pdf
    • http://michelehrose.com/uploads/1/3/0/3/130379155/8778092.pdf
    • http://nhrealestate.org/uploads/1/3/0/6/130603764/nitonabido.pdf
    • https://munifufe.weebly.com/uploads/1/3/0/6/130604026/fokolinikez_zajibovukam_zemadorokuwudo.pdf
    • http://believe-in-good-food.nl/uploads/1/3/0/5/130551714/a4ddd726cfa.pdf
    • http://nursingarmpillow.com/uploads/1/3/0/5/130551188/130551188.html#widal+tube+test+normal+values

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011b1.bin
bbe681eeb393e075cab8737cb69cc61333a234252d43af7983a9cdd7bc8fbca1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B1 8660 bytes

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