Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0eeafcc5ab084c6…

MALICIOUS

PDF

68.8 KB Created: 2021-02-17 23:01:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b790f38e007a0b2a2bc3cfcfd103ece6 SHA-1: 9f7d9e8fc81f0c0004e5762075213a4d650a0e5e SHA-256: d0eeafcc5ab084c6b5fc3be7c5c00438a6386c3c708c996d51f131db0f2e5fbc
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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://seumenha.ru/wix?keyword=sports+merit+badge+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448137/normal_600cfb6672af3.pdfIn PDF document text
    • http://help-business-media.com/gigabyte_b450_aorus_elite_user_manualyrsne.pdfIn PDF document text
    • http://safilow.iblogger.org/wiratapubexasaxenisava.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387031/normal_5fc773f47a651.pdfIn PDF document text
    • https://fuxiwajusefu.weebly.com/uploads/1/3/4/6/134617271/karulud.pdfIn PDF document text
    • https://cdn.sqhk.co/nutakurij/diegejg/carpenter_ant_nest_removal.pdfIn PDF document text
    • http://covid-19online.site/797765684736sx9p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418788/normal_5fd8df6b23a46.pdfIn PDF document text
    • http://vnds-super.space/ruvibavisujufugixdjena.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/zapogafonomopod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368504/normal_5fdf96ccce1e0.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/Lichjjf/psoriasis_cream_amazon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426697/normal_601fd6a2eaa9b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tefesapebeto.rf.gd/javascript_file_from_blob_url.pdfIn PDF document text
    • http://lemaponu.rf.gd/9420150825.pdfIn PDF document text
    • http://lemujiv.epizy.com/99465835337.pdfIn PDF document text
    • http://xutevefe.epizy.com/vulukakelutarulukedenabu.pdfIn PDF document text
    • http://duvewukabiwetu.epizy.com/vemifejida.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF17 5740 bytes
SHA-256: eddccd23ab8d6dfe3a33b17e3ec9b41742970df268586b271ec93f22f82de448
font_01_sfnt_off0000e279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE279 10516 bytes
SHA-256: c14bd820f5b4d63f8613f106d688d4f05fba076a43cadff99091da57b88f1fbe

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