Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b8ec72e8220e9d1…

MALICIOUS

PDF

72.3 KB Authoring application: pstoedit First seen: 2020-09-24
MD5: 7c13db29899aec727b94a6541580dc51 SHA-1: cc2670519599631a62c2244390cd67ca1109ab70 SHA-256: 8b8ec72e8220e9d19a78ecf3c7fc4f2d96011db0344d0dc464f5daca6aa21283
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection also flags this as Pdf.Phishing.TtraffRobotInstall. The document body, though heavily obfuscated, contains URLs that are part of this link farm. The primary attack pattern appears to be a link farm designed to redirect users to potentially malicious content or for SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 https://sozikegelikozu.weebly.com/uploads/1/3/0/4/130476649/luzox.pdf In PDF document text
    • http://texas2stepfilm.com/uploads/1/3/0/2/130291783/4251b8b.pdfIn PDF document text
    • http://d-jedi.com/uploads/1/3/0/2/130270991/lopawajakaluferivesa.pdfIn PDF document text
    • http://jasajuto.kkylosov.ru/uploads/2020/01/27/1474647.pdfIn PDF document text
    • http://pigoza.markaajans.online/uploads/2020/01/27/4329442.pdfIn PDF document text
    • https://fusutavakawiti.weebly.com/uploads/1/3/0/5/130588775/a02d3a.pdfIn PDF document text
    • http://europeanfenestrationsystems.com/uploads/1/3/0/5/130589252/dusixed.pdfIn PDF document text
    • http://tjinspires.com/uploads/1/3/0/2/130270768/b5be01650b3.pdfIn PDF document text
    • http://pisax.zphoto.pro/uploads/2020/01/28/worifokeminu.pdfIn PDF document text
    • http://cantonfair2u.com/uploads/1/3/0/5/130551153/wigigad.pdfIn PDF document text
    • http://nexoclean.com/uploads/1/3/0/3/130323597/woweromi.pdfIn PDF document text
    • http://gubovebil.copyrightcontact-1000004839645.com/uploads/2020/01/27/731d3fcb98.pdfIn PDF document text
    • http://setujo.inity420.com/uploads/2020/01/27/gomabapusovi-visikewal-jadipexo-jexom.pdfIn PDF document text
    • http://urlmac.com/uploads/2020/01/28/wupoj.pdfIn PDF document text
    • http://xelabinife.greatthings.icu/uploads/2020/01/27/dezudasifu.pdfIn PDF document text
    • http://dvoryansky.ru/uploads/2020/01/28/dugog.pdfIn PDF document text
    • http://northshorepf.weebly.com/uploads/1/3/0/5/130544134/5e54caf87949.pdfIn PDF document text
    • http://reikijan.com/uploads/1/3/0/6/130639911/e099d586f4b5c0.pdfIn PDF document text
    • https://xopilavuxuneki.weebly.com/uploads/1/3/0/6/130604737/6021491.pdfIn PDF document text
    • http://passione-presepe.com/uploads/1/3/0/4/130436139/3ee5d5b46.pdfIn PDF document text
    • http://kersteninc.com/uploads/1/3/0/5/130539297/fibujizurutubizomow.pdfIn PDF document text
    • http://kellysandau.com/uploads/1/3/0/6/130604744/demaj_maxuki_lixumepuja.pdfIn PDF document text
    • http://staygraceful.us/uploads/1/3/0/6/130604744/d18745ff4e.pdfIn PDF document text
    • http://nuohotel-zh.devsite-1.com/uploads/1/3/0/4/130435998/130435998.html#friction+on+inclined+plane+reportIn 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 3

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_off000016b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B4 9332 bytes
SHA-256: ac955b96c75fa55447a9138fdfdc5cb640ed3c362a660057e08d7524bcef461c
font_01_sfnt_off0000c9f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9F2 16296 bytes
SHA-256: 8924f8d1688d8df7cdd0c28764f944d237246543a18303980fb18d981d4bddc2
font_02_sfnt_off0000df40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF40 2980 bytes
SHA-256: dfce982e17c0476fbfc52cca6ece7e338966297a88a8d3d408702d43ff35dbaf

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