Malicious PDF — malware analysis report

Static analysis result for SHA-256 87da1bec9f38b542…

MALICIOUS

PDF

49.6 KB Created: 2021-03-22 15:16:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2c0ee506d4d2b22e16511f5ff373c10b SHA-1: be3e831dab6f3bab07aabfc986864eaa29cc3003 SHA-256: 87da1bec9f38b542dcb0f6c3b0c3e5039f77ac26f07d8587059f8faf1a478edd
184 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are hosted on disposable domains, suggesting a link farm designed to distribute malware. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains references to 'Epson v370 driver for windows 10', aligning with a lure to download potentially harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://gimoguvi.ru/aws?utm_term=epson+v370+driver+for+windows+10 PDF link annotation
    • https://cdn.sqhk.co/bataseset/agf2hcF/inside_out_anger_voice_actor.pdfIn PDF document text
    • http://finansi-7.online/android_9._0_pie_iso25lcr.pdfIn PDF document text
    • https://fifabazu.weebly.com/uploads/1/3/4/7/134702458/beneti-jisetexuwuw.pdfIn PDF document text
    • http://italywow.space/html_beautifier_and_formatterxobag.pdfIn PDF document text
    • http://igcopyrightclient.com/que_significado_tiene_la_pelicula_el_hoyoir2z5.pdfIn PDF document text
    • http://50offstore.info/sinutisosuvedesowafumefe9lv0z.pdfIn PDF document text
    • https://wesuzijuto.weebly.com/uploads/1/3/0/7/130740493/puwipafowub.pdfIn PDF document text
    • https://cdn.sqhk.co/teforoke/ieidpdV/pigisupizijeguzijaper.pdfIn PDF document text
    • https://puxonuge.weebly.com/uploads/1/3/1/3/131383548/xazisakemop.pdfIn PDF document text
    • https://cdn.sqhk.co/baxijaxazixi/ibEjfjh/lunegawusozowuxivejov.pdfIn PDF document text
    • https://cdn.sqhk.co/zetuzire/ZIhjeZr/kanashimi_wa_aurora_ni_piano_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/fudixaxogub/iimkVii/53715879357.pdfIn PDF document text
    • https://cdn.sqhk.co/meradipuwiz/d0ichf6/43139899871.pdfIn PDF document text
    • http://nnorm-id.com/world_economic_forum_global_competitiveness_report_20098fiog.pdfIn PDF document text
    • https://cf587a47-7c2f-4f55-8bbb-21a4c73503f7.filesusr.com/ugd/8ea597_ba7b2d417f374cbf99f543a48c1d415a.pdf?index=trueIn PDF document text
    • https://8964868a-aef6-4da0-9a9b-29de7c28e0c5.filesusr.com/ugd/b910ae_077b8a4dc94c4535a12b10c77f9f4d84.pdf?index=trueIn PDF document text
    • https://86a6be6f-1c3f-48a2-98e5-8a654ddc1212.filesusr.com/ugd/027f51_cb53c52da76344d4a2a3f0e020af37ed.pdf?index=trueIn PDF document text
    • https://fea67d75-dd3b-4bdd-af05-748e92ec8a52.filesusr.com/ugd/05900a_a5e86f532f5e4956aef5ac66c6865293.pdf?index=trueIn PDF document text
    • https://141ebdc9-a3c9-4c6d-b8f9-366dbf139dec.filesusr.com/ugd/46bfb0_c528ab692db746719f4b69138e1f0f57.pdf?index=trueIn PDF document text
    • https://dacf5b84-f80e-4bd8-bb7f-22aad20a1cd8.filesusr.com/ugd/285be4_20fe4be96c3d45ef8f9957977ec45db6.pdf?index=trueIn PDF document text
    • https://44f68060-d5e3-4d58-b4e7-e3760392f352.filesusr.com/ugd/49488e_d2a7112aad5f448c91ecf87dade27869.pdf?index=trueIn PDF document text

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