Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea106b60e0ebfa8e…

MALICIOUS

PDF

78.5 KB Created: 2021-03-19 19:16:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3c5e75c7db49cdb60f390952116dbd87 SHA-1: 23c08f2fc45dabfc4859912e3651fd807ab8390c SHA-256: ea106b60e0ebfa8e3e7dd60770df4468ea87aaf43fab9182c1e8b68c02bb928e
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 0.9993

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://leonvi.ru/wix?keyword=super+bowl+2020+box+template PDF link annotation
    • https://cdn.sqhk.co/tunuviju/fveZjjk/smash_up_derby_ontario.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527902/normal_5fc9e7a03f66a.pdfIn PDF document text
    • http://ita-bio.space/xivunijeribevebafogigipliwvg.pdfIn PDF document text
    • http://aviabileti.ru/522897690vk3ps.pdfIn PDF document text
    • http://banquepopulaire-fr.org/piruzoxosebumudugakexan7dtqd.pdfIn PDF document text
    • http://trikotoria.ru/uk_law_dictionaryv1h4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379371/normal_5ff2bc5213dc0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366654/normal_6003a6078ecb4.pdfIn PDF document text
    • http://effektzhizni.ru/75053174206k2wqy.pdfIn PDF document text
    • http://kernig.online/afirmaciones_louise_hay480ca.pdfIn PDF document text
    • http://dressnbuy.com/51449533090gvrrm.pdfIn PDF document text
    • https://cdn.sqhk.co/mojekuvugise/hdicQou/27770209042.pdfIn PDF document text
    • http://salopkisa.website/26028858334pohkm.pdfIn PDF document text
    • https://cdn.sqhk.co/jumivosokigo/hMCicta/the_galactic_emperor_200.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374852/normal_603e40721dcd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411252/normal_60244cb3583b4.pdfIn PDF document text
    • http://file-id.ru/riretuxogdcw1z.pdfIn PDF document text
    • http://openchambre.xyz/esv_bible_app_costixqut.pdfIn PDF document text
    • http://totalcreditreport.info/wodutuxuvuvemizvmiu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/biforme_en_francais.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/30664641426.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/26379279696.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/icloud_bypass_iphone_4_by_bl3d1.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_off0000f33d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33D 5464 bytes
SHA-256: c9f9b3334c06309d5390d95ade340c2227a72812f9dbe9917b0ff985a4708b68
font_01_sfnt_off000105d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105D0 11344 bytes
SHA-256: 8170b149d0322248ea3a90043e6bc37ebfb74a45e1feb448933540f6c82818b0

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