Malicious PDF — malware analysis report

Static analysis result for SHA-256 813440dd142e0cdb…

MALICIOUS

PDF

103.0 KB Authoring application: ImageMagick First seen: 2020-09-24
MD5: 21acdd1555c99ed9ca6615bb5e410054 SHA-1: 5e86f89ff9a054177f1475cd3abaa69085c86015 SHA-256: 813440dd142e0cdb4a7bc1db8b62286508d1adfa1d038b69e745d090a4e766c5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. No scripts were extracted, but the sheer volume of external links suggests a coordinated effort to direct users to potentially harmful resources.

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://redneckfest.org/uploads/1/3/0/3/130323462/gupogomezakuki.pdf In PDF document text
    • http://improbable-studios.com/uploads/1/3/0/7/130776421/8570137.pdfIn PDF document text
    • http://mta-sts.mail.brickalleybistro.com/uploads/1/3/0/6/130639776/b2ab6f75.pdfIn PDF document text
    • http://spectrumart.org/uploads/1/3/0/8/130814088/xipefumexawafux-kalanixamubuwe-xejuwibata.pdfIn PDF document text
    • http://www.alanruuska.com/uploads/1/3/0/6/130621857/8411292.pdfIn PDF document text
    • http://ketoqr.com/uploads/1/3/0/7/130739474/gaziwineza.pdfIn PDF document text
    • http://runforestrunclub.com/uploads/1/3/0/5/130588498/7176c1925.pdfIn PDF document text
    • http://talesoftwotravelers.com/uploads/1/3/0/2/130287972/da9eacff7dc6853.pdfIn PDF document text
    • http://quantumlevelsoulhealing.com/uploads/1/3/0/6/130604699/munoru.pdfIn PDF document text
    • http://fashionblitz.org/uploads/1/3/0/3/130323384/ecd8ed74a7f8b.pdfIn PDF document text
    • http://moretonislandfishingcharters.com/uploads/1/3/0/2/130272512/garularijesot-koloxepu.pdfIn PDF document text
    • http://louisachawhan.com/uploads/1/3/0/6/130603906/255736.pdfIn PDF document text
    • http://bjarkalundur.is/uploads/1/3/0/7/130775088/10e69d.pdfIn PDF document text
    • http://wholelifemoment.com/uploads/1/3/0/5/130588880/jozosumew.pdfIn PDF document text
    • http://plancul-reims.net/uploads/1/3/0/5/130590310/vadiwodun_goxanuboj.pdfIn PDF document text
    • http://cfamemorymaster.com/uploads/1/3/0/4/130483492/e939047af0.pdfIn PDF document text
    • http://bobdunphy.com/uploads/1/3/0/5/130539660/9d187d7b9cde.pdfIn PDF document text
    • http://rncheadquarters.com/uploads/1/3/0/3/130323672/d739d8.pdfIn PDF document text
    • http://wcd-khbyu3nv.mgh-r.ch/uploads/1/3/0/6/130639486/130639486.html#multilingual+definition+world+geographyIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: sidewalksteve.com 5 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1210 11156 bytes
SHA-256: e505d261cc59e2492e898be021d2663f15b13aa425e80d818514f587fbef0006
font_01_sfnt_off0000a6d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D0 2632 bytes
SHA-256: d4bb9b13501e6a5a325ff03f996dbdb07ca6c1030475d2a56e2a5af2328f5e87
font_02_sfnt_off00014de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DE1 16608 bytes
SHA-256: 013e3153b51f18e9f40b8f1eb4dfff032467c13f351f5ab1697eae43d2e2b2b3