Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee339ff3929e504…

MALICIOUS

PDF

78.9 KB Created: 2021-03-20 04:47:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 5718bcf15125f7822c208fc7750d60fe SHA-1: c99b8c03b5154347eba4514f98bc0fbe7c568d13 SHA-256: 7ee339ff3929e50409108e0318f9d3dbe34078b5647c906ca3f558b3acec8446
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs that point to link farms hosted on disposable domains, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

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://resalured.ru/strik?utm_term=apple+ipod+shuffle+charging PDF link annotation
    • http://eurozone.pro/99792119890u94z2.pdfIn PDF document text
    • http://sravniproxy.info/what_does_warm_fuzzy_mean_in_slang3si8v.pdfIn PDF document text
    • http://13millions.store/can_you_whitewash_stained_pine2j012.pdfIn PDF document text
    • http://tefitagesev.mypressonline.com/hp_laserjet_pro_100_color_mfp_m175nw_wireless_setup.pdfIn PDF document text
    • http://jevafurevozu.mygamesonline.org/mavugibo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455642/normal_60059bc3d8e4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417208/normal_60131394beb72.pdfIn PDF document text
    • https://zibozofebar.weebly.com/uploads/1/3/0/7/130740265/samexisukoxuluv.pdfIn PDF document text
    • http://rixorevu.getenjoyment.net/befarivozejaguw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424997/normal_5fd650afde8af.pdfIn PDF document text
    • http://liko-sneakers.com/lubarelasodedurqek9.pdfIn PDF document text
    • http://linavaluviriv.getenjoyment.net/ensayo_de_logistica_y_cadena_de_suministro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460690/normal_5fdc3bc149fe9.pdfIn PDF document text
    • https://xumefuzodagugud.weebly.com/uploads/1/3/1/3/131384373/1cd70162.pdfIn PDF document text
    • http://milanomodaitaly.site/google_tricks_thanos_wizard_of_ozsgfdn.pdfIn PDF document text
    • http://bratskpravojur.ru/imprimante_hp_photosmart_c3180_probleme_cartouchezvaqr.pdfIn PDF document text
    • http://nibelv.xyz/duwulusofivg05q7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383165/normal_5fdf718131bd5.pdfIn PDF document text
    • https://wagemerefav.weebly.com/uploads/1/3/2/7/132712282/4219a30a92.pdfIn PDF document text
    • http://lodewatapogin.iblogger.org/23236031966.pdfIn PDF document text
    • http://kebenoda.scienceontheweb.net/fisher_paykel_dishdrawer_fault_code_f1.pdfIn PDF document text
    • http://winoraama.website/sample_project_scope_statement_templateu8kvp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sidoroxeroleven.epizy.com/vomezosorabexugivu.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_off0000f4cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CF 5408 bytes
SHA-256: 3753a6cea71125e84d965a09e7f4b40953223e4ed5ab635450f1a4ce054ccc3a
font_01_sfnt_off00010733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10733 11444 bytes
SHA-256: 9293d8fddd18c8ad07ef742eed368263ffaaedc73e89f8ffbde1531858b277ab

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