Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c59895c56e0c6a4…

MALICIOUS

PDF

137.0 KB Authoring application: OpenOffice.org First seen: 2020-09-24
MD5: 1c7c76c0db6c7898d7b40d88c86d7e79 SHA-1: ab4cb2130faa2aa13bc263a28a2c4a497c49c2d7 SHA-256: 0c59895c56e0c6a4771bfa2a29b09ced07fc490a98eaaa6a45a06f78daf14367
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links to other PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall-7605656-0, and a machine learning classifier also flagged it as malicious. The embedded URLs suggest a phishing or spamming campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bozemanradiant.com/uploads/1/3/0/4/130483210/munugosodos.pdf In PDF document text
    • http://purl.one/uploads/1/3/0/2/130273798/bea190269857b.pdfIn PDF document text
    • http://mdcablingservice.com/uploads/1/3/0/5/130589385/4292197.pdfIn PDF document text
    • http://nbmgonline.com/uploads/1/3/0/7/130739437/0cdd6b321b22250.pdfIn PDF document text
    • http://mx.circlecitycrystals.com/uploads/1/3/0/3/130313585/7017970.pdfIn PDF document text
    • http://monthlytights.net/uploads/1/3/0/6/130621938/5358775.pdfIn PDF document text
    • http://urbanvillagefitness.com/uploads/1/3/0/5/130541846/d24b2949c724.pdfIn PDF document text
    • http://bettabowls.com/uploads/1/3/0/7/130775737/pebogepodanudoke.pdfIn PDF document text
    • http://salenasantibanez.org/uploads/1/3/0/6/130640101/xoxadoxajakis-kofaboko-xuvepamubukeg-visixuxubev.pdfIn PDF document text
    • http://swellbathrooms.com/uploads/1/3/0/6/130621483/natawovivesugin_narenukelefal_wusugi.pdfIn PDF document text
    • http://madeinvenicefilm.net/uploads/1/3/0/4/130490151/9214731.pdfIn PDF document text
    • http://infusionsafety.com/uploads/1/3/0/4/130475994/jemefexegokatebif.pdfIn PDF document text
    • http://a1638037xstreamtravel.xsideas.com/uploads/1/3/0/5/130552084/130552084.html#netbook+acer+aspire+one+usadoIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF2 12056 bytes
SHA-256: fd6f36eced7cf6c737da1aef74c8e9cd877e397c1239c63c5f2843bdfbfe5f87
font_01_sfnt_off0000e751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE751 2696 bytes
SHA-256: 2563807223d686b98c00555c583c39a0d8e0d5539b1537586a5d9d14e57bf7bf