Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e5ffee36ee5bcd0…

MALICIOUS

PDF

84.9 KB Created: 2021-04-15 05:46:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0380b7d61156656e61c97e17786cc002 SHA-1: de3ece5e61ca6627f53064cfcbad068d755ece15 SHA-256: 0e5ffee36ee5bcd0ea942f247ea793cf5795dbea51ec787ad63f2fbfb925ff83
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://soxebez.ru/strik?utm_term=meyer+e47+plow+wont+angle+left PDF link annotation
    • http://kunutudusoxa.mywebcommunity.org/30051280946.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/5947194280.pdfIn PDF document text
    • https://cdn.sqhk.co/banamasuvaj/fgdmche/19060520772.pdfIn PDF document text
    • https://cdn.sqhk.co/rubovadu/iijizus/xitevajujuxarimavuxen.pdfIn PDF document text
    • http://dakiravafo.iblogger.org/kuwowuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b3d988c2-7a7d-4c3c-9141-221b6550481e.filesusr.com/ugd/9dda13_4ecdd5f57508427db70c5b459c6d8c8c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tawovojo/10415535383.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/human_resource_mgt.pdfIn PDF document text
    • http://kaxuwenewutexu.myartsonline.com/59113133120.pdfIn PDF document text
    • https://f98f40d2-b649-4e6b-99af-b89bbf2331ff.filesusr.com/ugd/724bd4_9563e746ce4c413499380792809ec3a4.pdf?index=trueIn PDF document text
    • http://mafasegu.epizy.com/video_player_app_for_java.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/3808260245.pdfIn PDF document text
    • http://wijopimitiraze.epizy.com/dapadimulogajovakojuv.pdfIn PDF document text
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_9c4e5f3fe83443b182d95978e71d72a8.pdf?index=trueIn PDF document text
    • https://eaa62ee9-779c-4a2d-9f50-6c66b019a99c.filesusr.com/ugd/1cc777_2b1e36f4a6ce4682ba9025e34692aa1c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/wrong_turn_7_movie.pdfIn PDF document text
    • https://d80868e2-5d34-4dda-9345-0396294a35aa.filesusr.com/ugd/f9fac6_464d78c70af7417c860567544fd67e1d.pdf?index=trueIn PDF document text
    • http://funonezebiv.rf.gd/array_and_strings_in_c_programming.pdfIn PDF document text
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_f06b648f13d14d2bb737dea0ee46d202.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10462 2900 bytes
SHA-256: 40ce0bc9b113ef031639604f059b60aa9f1e41b097d60e75bfbf620cccc66306
font_01_sfnt_off00010ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA6 5260 bytes
SHA-256: c845efc5b2b270f0e1e3ae9fb0c4c1fc4db767efadca5e8bd42f430d3f15cac2
font_02_sfnt_off000120d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120D4 10964 bytes
SHA-256: b66ce2de62b939f2c6eb96d88526d88515592a1428cebed68308efdeff93d6dd

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