Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb91f8d709b185c0…

MALICIOUS

PDF

83.1 KB Authoring application: Mobipocket Creator First seen: 2020-09-04
MD5: 35be293ceca6ee477219c7340d4860fa SHA-1: c09c4252ab662f56f25585475b0fbc782d3e4389 SHA-256: cb91f8d709b185c0635c45d7759fa8f6d0e0de6081da551adbccb6b106bd5141
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing 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. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://voyagescimatur.com/uploads/1/3/0/6/130639337/2864209.pdf In PDF document text
    • http://writersplot.com/uploads/1/3/0/3/130323511/7095709.pdfIn PDF document text
    • http://topcambodia.com/uploads/1/3/0/4/130489175/90dc8df.pdfIn PDF document text
    • http://southernrugs.com/uploads/1/3/0/5/130551427/d2ccfc99b9ce5.pdfIn PDF document text
    • http://hostmaster.fismen-harmonika.de/uploads/1/3/0/3/130323224/fokuzezudoribo.pdfIn PDF document text
    • http://beetlebee.us/uploads/1/3/0/7/130775002/nojogo.pdfIn PDF document text
    • http://nourishhealthservices.com/uploads/1/3/0/4/130483733/xepamoze_bufut.pdfIn PDF document text
    • http://theothermanny.com/uploads/1/3/0/4/130476215/vamonegemufano.pdfIn PDF document text
    • http://towparttimestaffresources.com/uploads/1/3/0/5/130540266/pisenuxib-tiguwefosez.pdfIn PDF document text
    • http://showerpowerboosters.com/uploads/1/3/0/5/130540397/4082825.pdfIn PDF document text
    • http://mx.touchpointtherapeutics.com/uploads/1/3/0/8/130814055/c43f8dc8d60fe.pdfIn PDF document text
    • http://striba.net/uploads/1/3/0/7/130739793/2808360.pdfIn PDF document text
    • http://mayahabian.com/uploads/1/3/0/5/130538986/cfd5aa16b6cad25.pdfIn PDF document text
    • http://simplinnovate.com/uploads/1/3/0/8/130815213/1305448.pdfIn PDF document text
    • http://millicentelainewilliams.com/uploads/1/3/0/5/130543346/wifizu.pdfIn PDF document text
    • http://www.alfagood.com/uploads/1/3/0/9/130969360/kobileralemobug_dugum.pdfIn PDF document text
    • http://jacsmacdl.com/uploads/1/3/0/5/130550731/gufugovunugap.pdfIn PDF document text
    • http://sugarlandpremierroofing.com/uploads/1/3/0/5/130550667/646ebf.pdfIn PDF document text
    • http://main-cooking.com/uploads/1/3/0/7/130775016/539719.pdfIn PDF document text
    • http://phhlca.org/uploads/1/3/0/7/130739348/datekolajez_relat_riritupajoriru_kupobo.pdfIn PDF document text
    • http://mjscoffeehouse.com/uploads/1/3/0/6/130621480/dowejatuxoka.pdfIn PDF document text
    • http://thelivingwordchannel.com/uploads/1/3/0/3/130313346/vuxixunajiv_noboxerosinav_zitur_ponumoretuju.pdfIn PDF document text
    • http://emsequitymortgagesolutions.com/uploads/1/3/0/5/130590142/5965687.pdfIn PDF document text
    • http://vechain.technology/uploads/1/3/0/2/130289214/xawajodi.pdfIn PDF document text
    • http://midnightepiphanyband.net/uploads/1/3/0/5/130589231/duxobudizuwagapog.pdfIn PDF document text
    • http://74-123-79-82.mgwnet.com/uploads/1/3/0/4/130476850/130476850.html#neurogenic+bladder+dysfunction+in+patients+with+spinal+cord+injuryIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B24 8512 bytes
SHA-256: e34c92849cbd74b751c352c92fcc191799f82d43cb937ca8b208bddf765fa2c6
font_01_sfnt_off0000f5ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5EF 16064 bytes
SHA-256: fc0bcc9d08d908b8b1287d0ab2df4e3a5be78b1d1690d8efe3ff9d2c54ab5679
font_02_sfnt_off00010a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A47 3156 bytes
SHA-256: 4e9ae17c41f053e7ad2cff4c16f4465db96732130fdde230725ded2fe80853ad

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