Malicious PDF — malware analysis report

Static analysis result for SHA-256 858a5571a259780a…

MALICIOUS

PDF

44.8 KB Authoring application: Adobe PDF Library 9.0 First seen: 2020-09-24
MD5: f81e8f3597ea16d07534ddd2656fc65b SHA-1: ab0126faf04cf86633a6ea67eb62507afcd4b888 SHA-256: 858a5571a259780a9dafc92bc781a11db2085b22cf56941bb4fffb1d82722e01
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm with 31 URLs, indicating a likely SEO manipulation or content distribution scheme. ClamAV detected this file as Pdf.Phishing.TtraffRobotInstall-7605656-0, and an ML classifier also flagged it as malicious. The embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://rockdaletenniscenter.org/uploads/1/3/0/6/130639363/4608136.pdf In PDF document text
    • http://the-b-hive.com/uploads/1/3/0/5/130546432/pawiwevomusosog_donixoxup_mobovida.pdfIn PDF document text
    • http://opynestrategies.org/uploads/1/3/0/4/130488251/c80c0d74144f2.pdfIn PDF document text
    • http://blubloggs.com/uploads/1/3/0/5/130588989/23e79.pdfIn PDF document text
    • http://triadageless.com/uploads/1/3/0/7/130738732/f926e73.pdfIn PDF document text
    • http://sugooi.com/uploads/1/3/0/2/130287914/acb3755fec.pdfIn PDF document text
    • http://suckerbeagle.com/uploads/1/3/0/2/130289681/paxaxexefisusep-moketu-xoredozofet-pomakexexutujif.pdfIn PDF document text
    • http://petrosahari.com/uploads/1/3/0/3/130313105/8491677.pdfIn PDF document text
    • http://danielamansfield.com/uploads/1/3/0/8/130814423/3f9b0e1f5d8.pdfIn PDF document text
    • http://bodydelux.com/uploads/1/3/0/6/130620503/7255112.pdfIn PDF document text
    • http://cascadesoft.net/uploads/1/3/0/4/130483863/zidabof-gokapavuvipibaw-logukutubi-mivujexisenup.pdfIn PDF document text
    • http://littledreamers.net/uploads/1/3/0/6/130640003/domosanome.pdfIn PDF document text
    • http://bestfriendguidetoeverything.com/uploads/1/3/0/6/130604475/valofiletal.pdfIn PDF document text
    • http://canberry.net/uploads/1/3/0/5/130543772/dijekawav-zaxow-fiduloneguno-basizapena.pdfIn PDF document text
    • http://www.mckinneydoctor.net/uploads/1/3/0/3/130323328/ef9a52799b1.pdfIn PDF document text
    • http://cams-collection.com/uploads/1/3/0/6/130639652/9dd75216.pdfIn PDF document text
    • http://thehappygirlstore.com/uploads/1/3/0/4/130489172/refuvokewavuf-kawosisawunafel.pdfIn PDF document text
    • http://aroundtheclocktots.gammaxiques.org/uploads/1/3/0/2/130271153/130271153.html#the+wizard+of+oz+somewhere+over+the+rainbow+chordsIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CC 1708 bytes
SHA-256: 83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086
font_01_sfnt_off000038bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38BD 16068 bytes
SHA-256: 7452b6b49b2d67df973eecb7580c7a2fe344bf55d7b957b3ade50b6969c50269
font_02_sfnt_off0000506f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x506F 8516 bytes
SHA-256: 0d2cf3db3bd6e76b4bce2f38ea807eb24157c4cf35aea02f4cbd595415ec19e0