Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee2d8f5b8c2f4ff…

MALICIOUS

PDF

78.0 KB Created: 2021-03-26 08:46:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6e25b40108ea27a58f09c1e31ce20fee SHA-1: 24619e314b71a0aaad7528b3b4ff54a16e7f22d6 SHA-256: 8ee2d8f5b8c2f4ffdb022d2131ee3bbeb16ba336d3a7418e104ff5297c875204
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 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/123?utm_term=kausani+travel+guide PDF link annotation
    • http://pefaninax.22web.org/14194897537.pdfIn PDF document text
    • http://fopokigife.mywebcommunity.org/likofupo.pdfIn PDF document text
    • https://masenajeronuzes.weebly.com/uploads/1/3/1/6/131637464/414432.pdfIn PDF document text
    • http://xuzumareto.iblogger.org/gavapavegi.pdfIn PDF document text
    • http://ginajazadunoxix.22web.org/grievance_register_format_for_employee.pdfIn PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/a1bc61.pdfIn PDF document text
    • http://menetufebev.22web.org/zowax.pdfIn PDF document text
    • https://megevoweroke.weebly.com/uploads/1/3/5/3/135351245/panefuguvanesali.pdfIn PDF document text
    • https://varalege.weebly.com/uploads/1/3/0/7/130738576/gemisego.pdfIn PDF document text
    • http://nozafokow.iblogger.org/76342715485.pdfIn PDF document text
    • http://riwuveroxuwox.66ghz.com/tarotil.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/niwafukupi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gozidonozali.myartsonline.com/what_causes_commotio_cordis.pdfIn PDF document text
    • http://vubixijugisoloz.epizy.com/49084619644.pdfIn PDF document text
    • http://mepumazat.epizy.com/kemijepe.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/25871897653.pdfIn PDF document text
    • http://vidoniwofunevan.onlinewebshop.net/tamil_bible_history.pdfIn PDF document text
    • http://nununad.myartsonline.com/engineering_change_management_process.pdfIn PDF document text
    • http://zoxizagujaniru.epizy.com/what_is_series_in_bosch_washing_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/renokuketeguxo.pdfIn PDF document text
    • http://susosutudufat.rf.gd/11269724148.pdfIn PDF document text
    • http://sapirilogive.epizy.com/56518975257.pdfIn PDF document text
    • http://panurimo.epizy.com/grace_fit_home_guide.pdfIn PDF document text
    • http://fusupufe.epizy.com/olivetti_lettera_32_manual_en_espaol.pdfIn PDF document text
    • http://jefesipi.rf.gd/difference_between_probability_and_nonprobability_sampling.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/odisha_police_physical_test.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f52c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52C 5020 bytes
SHA-256: e593ce40cc327d625cf1731e6aa9940c142920a3c35ac65a6c8e2fe7eb82efdc
font_01_sfnt_off00010658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10658 10496 bytes
SHA-256: e1bd47ce99ec12bc4d5af30e1e5172beaac376f0d06f865725bac1b7e098fcac

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