Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4fb2cfc4b85cc9a…

MALICIOUS

PDF

60.9 KB Authoring application: pstoedit
MD5: 3a7889d1c8b3492111369730c68dd669 SHA-1: 333b59bd8ef22b21f5ff2a4209baea958c71379a SHA-256: c4fb2cfc4b85cc9a35f70c9e9a7a8dc32b69a1041ccb41f584cad368c8447b96
120 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV with the signature Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a large number of embedded external links, many of which point to PDF files on various domains. This suggests a link farm or a method to distribute further malicious content, potentially for phishing or SEO abuse. 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://seashellmurals.com/uploads/1/3/0/5/130538862/xadazerudiromikarobe.pdf
    • http://botatev.cuggolin.xyz/uploads/2020/01/27/dasisidanaju_kozef_xozepilobokamo_rojebalevogak.pdf
    • http://wijaru.zaruba.pro/uploads/2020/01/28/6928461.pdf
    • http://noscopegaming.net/uploads/1/3/0/6/130620280/0f09b2048.pdf
    • http://aipriceaction.org/uploads/1/3/0/6/130640039/78bf0104b238.pdf
    • http://noosateardropflags.com/uploads/1/3/0/2/130289166/57b5d2d422.pdf
    • http://tranquilityhilllodge.com/uploads/1/3/0/2/130274028/7126411.pdf
    • http://mandakemp.com/uploads/1/3/0/3/130313643/xejorobev_kowet_pufubokaneba_pitemo.pdf
    • http://robbietech4teach.org/uploads/1/3/0/2/130291485/7e97e4fa0d0.pdf
    • http://babywhoopsie.com/uploads/1/3/0/2/130292179/557b61681eedf.pdf
    • https://ximisisipo.weebly.com/uploads/1/3/0/5/130539888/sinarokobefa-kolaxidexebam-baruw-pofejom.pdf
    • http://striving4excellence.net/uploads/1/3/0/3/130313427/jowinufelakejalumo.pdf
    • http://daigos.ru/uploads/2020/01/27/7c26aaa1157.pdf
    • http://mytipsytaboo.com/uploads/1/3/0/5/130590395/wegube_lewikanapezed_vobilivirepam.pdf
    • http://vaxifax.zayavka-na-kredit.com/uploads/2020/01/29/rokokaxobuw_wabifixavi.pdf
    • http://leindl-design.com/uploads/1/3/0/3/130313370/9298218.pdf
    • https://jipilavurer.weebly.com/uploads/1/3/0/5/130588213/rukeneme.pdf
    • http://nyanyakrasnoyarsk.ru/uploads/1/3/0/6/130639770/142044.pdf
    • http://ogino-mpe-lab.dana-farber.org/uploads/1/3/0/3/130323754/130323754.html#south+movie+video+song++pagalworld

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015d4.bin
0eda97452bfbf9c7db07b1ff6976410c8db606d2096c7fcf250351068d84719b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15D4 8176 bytes
font_01_sfnt_off00008b62.bin
1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B62 1388 bytes
font_02_sfnt_off0000950c.bin
12c76f9e7368d143a7268aaf84f001b2c6ba0ff7a19a2d94915d5b6d6d4af4ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x950C 15848 bytes

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