Malicious PDF — malware analysis report

Static analysis result for SHA-256 42a55fdb175996c6…

MALICIOUS

PDF

40.8 KB Authoring application: Poppler-utils
MD5: 4b33bdbbcba350afc8510c99c0e5d5b6 SHA-1: 0aa26ee4d87308662f63b1571563a4ef6a680fee SHA-256: 42a55fdb175996c6eee5bb06fadedf3eddecb9ae99fb388cc4166f3a1a67e738
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to direct users to potentially malicious content. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malware distribution 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 https://darevumepuvo.weebly.com/uploads/1/3/0/5/130538918/7435132.pdf
    • http://jnvyx.xyz/uploads/2020/01/28/roderinobi-xerurumepemul-fupuze.pdf
    • http://wefufa.deepspect.com/uploads/2020/01/28/b50e6.pdf
    • http://jasara.xs-motors.pro/uploads/2020/01/28/kilufa.pdf
    • http://contiex.info/uploads/2020/01/27/9936218.pdf
    • http://drpatty.net/uploads/1/3/0/5/130543019/130543019.html#boss+chromatic+tuner+tu+01+manual

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001049.bin
054b61819a04f572de9a480be554384d6821480c143dc4d55c4ac3618cf72408		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1049 8096 bytes
font_01_sfnt_off00006488.bin
0c95c836df8234fdf9398cc1cb273e0fd319377b16da4fd76bb4b22d10cf51e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6488 2052 bytes

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