Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ea419faffacf3ea…

MALICIOUS

PDF

74.8 KB Created: 2021-03-06 15:12:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 1a6e2fca4478d02d9fc9978fc315d4cf SHA-1: 7e4b7d50b87327789f97d98ec3b51bf0f70861bd SHA-256: 8ea419faffacf3ead2c6c0f6920fc84811ad17940fb99e534e63353b26a49e0b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one suspicious URL pointing to a domain associated with phishing. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a link farm on disposable hosting, further supporting a phishing or malicious redirection scheme. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, likely involving redirection to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/strik?utm_term=kingdom+woman+pdf PDF link annotation
    • http://vizilamu.22web.org/31176951055.pdfIn PDF document text
    • http://fetokisajuxe.22web.org/mevukiperazi.pdfIn PDF document text
    • http://guwelozi.iblogger.org/xfinity_dvr_box_size.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/baroxobumidoremogi.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/shadowrun_weapons_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ebed6276-6372-4ddf-adad-9a0fa504b99f.filesusr.com/ugd/805d2a_6b3caa67528b4baa84ac76ec7c8d16a5.pdf?index=trueIn PDF document text
    • http://bumurulepowele.myartsonline.com/bivoxujavanuwakurilajunip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e23f353d-5d68-46e0-bae0-ddcb8fbdc2c8/the_third_estate_in_france_was_composed_of.pdfIn PDF document text
    • http://bamalupit.rf.gd/95602552325.pdfIn PDF document text
    • https://db244590-af71-4c33-bd6e-2f8f55f31281.filesusr.com/ugd/fdab61_e379420068694461be0b3ada4b1d5599.pdf?index=trueIn PDF document text
    • https://5c839259-519f-4cee-a1a2-6639d654070b.filesusr.com/ugd/140efa_878d51e8fdfb498ab1130a3d719ff1f1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/theories_of_geological_evolution_catastrophism_vs_uniformitarianism.pdfIn PDF document text
    • https://ebcfae26-b4e4-4f1a-a5b2-c5bdbddc1bdf.filesusr.com/ugd/259f90_2fbed8ab8571458f94252f4c5ff4636d.pdf?index=trueIn PDF document text
    • http://magonusu.epizy.com/52002822330.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/24317306642.pdfIn PDF document text
    • https://c2093f15-f4fb-4bda-9582-db5404103fa6.filesusr.com/ugd/b28561_353431f18a0e47fa8a2611dfac966e9a.pdf?index=trueIn PDF document text
    • http://lulanikigog.epizy.com/14574763408.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f50ae542-39c9-4ae9-9cc7-ec6ae527c0a0/paint_sprayer_for_cabinets_and_trim.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/97067011337.pdfIn PDF document text
    • http://wexalaz.epizy.com/vevulajikinarefomamel.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/graphing_quadratic_functions_worksheet_doc.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_off0000e957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE957 5116 bytes
SHA-256: 0b8eb97a2e5531d112e0c855c081e51c1f82f1220e9998b97d739934ae123827
font_01_sfnt_off0000face.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFACE 10380 bytes
SHA-256: 34e6608704eadf6b24f6cbb77a6d22c2bd44a53fbec48642658413398d8e809e

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