Malicious PDF — malware analysis report

Static analysis result for SHA-256 efa93ec48f0363c7…

MALICIOUS

PDF

85.1 KB Created: 2021-03-23 15:45:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7e095ba5a98da82e10e715f9a53659c3 SHA-1: 9d08857900edc2ef225c65d9c9b264d764ff84bb SHA-256: efa93ec48f0363c77ba39913857829c979973fb9f19b9f415aed5714c963f0b4
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 0.9995

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/wix?keyword=omaha+steaks+cooking+guide+chicken+breast PDF link annotation
    • http://todayshop.website/elder_scrolls_online_templar_build_2020zysfn.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/garozimuxexadejibubofivo.pdfIn PDF document text
    • http://wonozudobitisog.scienceontheweb.net/amnesty_scheme_pakistan_2020_download.pdfIn PDF document text
    • https://zesadokalefon.weebly.com/uploads/1/3/2/6/132681767/7087823.pdfIn PDF document text
    • https://nekemobo.weebly.com/uploads/1/3/5/3/135323096/4328811.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/lunulanidodifogobeletisif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463532/normal_6048319715ced.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454162/normal_60360d389cc34.pdfIn PDF document text
    • https://dorikorojuj.weebly.com/uploads/1/3/3/9/133987202/704687.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374545/normal_6026dd1181edf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474206/normal_604b7817c65a0.pdfIn PDF document text
    • https://jabukosiw.weebly.com/uploads/1/3/0/8/130874379/jiwabuxovowobu.pdfIn PDF document text
    • http://koreanluxe.com/5147266321784125.pdfIn PDF document text
    • https://mizewipexu.weebly.com/uploads/1/3/4/6/134609608/7864874.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bakoloj/chef_hat_template_for_preschool.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34efbc6d-3b19-45a1-95ec-c12b67a789eb/vonolokifakesagijegezoxu.pdfIn PDF document text
    • http://bujekotu.atwebpages.com/biography_of_gautam_buddha.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb7befcd-a4a4-4ae6-8779-411928428c33/kanunogutaxidovob.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/jupyter_notebook_to_report.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/10694072778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/675b262c-fd5d-41b0-afeb-0e3ae61fa023/78939823232.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2aebb44-acc3-4b6b-8904-332d40c45aed/26045121841.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE04 5432 bytes
SHA-256: 6025ac0ddfbc4019ffcde686fa00a56bfc6166c5df1634952377613e934ab86b
font_01_sfnt_off0001104d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1104D 11392 bytes
SHA-256: a19433fcdc847a8c4afededf7f772e95154a4e46bd93b6ce689572bf8666d9de
font_02_sfnt_off000136c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136C8 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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