Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea47e4e659678695…

MALICIOUS

PDF

81.4 KB Created: 2021-03-22 10:54:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 4f6220842ffd1d2894207208c804f1a3 SHA-1: 660e83acf9b81c5ccf59ce892ac39c0ab7c41991 SHA-256: ea47e4e65967869591044331f6528129c10856a38199ecaf9570cb7a94c1dd42
164 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a phishing lure and hosts a large number of external links, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://mezovuduw.ru/strik?utm_term=advanced+d%2526d+player%2527s+handbook+2nd+edition PDF link annotation
    • http://vudasuti.mygamesonline.org/degoxesudiranajunekilo.pdfIn PDF document text
    • http://zuxekagapefe.mygamesonline.org/work_performance_appraisal_journal.pdfIn PDF document text
    • http://motorutovibipe.sportsontheweb.net/24115586844.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7569f0b-a5b4-4c21-bae4-74e2c49e840b/how_to_write_orbital_notation_with_arrows.pdfIn PDF document text
    • http://taroveruwidiba.onlinewebshop.net/62505432068.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/iso_9001_interested_parties_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/appendix_research_paper_format.pdfIn PDF document text
    • http://desovizipelo.onlinewebshop.net/28601229977.pdfIn PDF document text
    • https://5e446c31-fcb6-4427-a178-91ee45bbff8b.filesusr.com/ugd/4e76b8_f82d40ed062d4a2ab8476381647d65e9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/picsart_for_pc_windows_7_softonic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb6394a6-4d1c-41dc-8ccd-c58f1d17d0da/94715029296.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/angry_birds_1_movie_hd.pdfIn PDF document text
    • http://wififeju.atwebpages.com/pivijigog.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/adobe_reader_pro_2017.pdfIn PDF document text
    • http://xobibaga.myartsonline.com/ncert_books_class_8_english.pdfIn PDF document text
    • https://4a7d9d2b-1d67-446c-8d6d-bdd3043d1f60.filesusr.com/ugd/c3d078_0852ca9b985e4093b435fa1a466bdbe6.pdf?index=trueIn PDF document text
    • https://27f1a270-5048-4778-87f0-574dfe85248a.filesusr.com/ugd/b7306e_ad74f3a38a04405fb8b15b7b06231e8d.pdf?index=trueIn PDF document text
    • https://538d8494-0c7d-401a-b890-0485f6bc7bca.filesusr.com/ugd/29c71c_098ad303746649e2a6866d2a36d01d51.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/539b054c-983b-4064-bcce-283afe9c6131/how_much_do_progressive_claims_adjuster_trainees_make.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/1570285290.pdfIn PDF document text
    • https://cad90261-f038-4e8a-b384-2e0e37e6cb8c.filesusr.com/ugd/4c4e45_c9a78b62ced047dc8642dcbefb3a8edc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zedilegol/nulijit.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/menschen_a2._1_arbeitsbuch_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/watermark_remover_software_for.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dd434d1-1f51-400b-ae05-5c24c2dcd01c/5414760901.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0645854-482c-44c4-8a84-8ec8d26123b6/what_weather_tool_is_used_to_measure_air_pressure.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_off00010335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10335 4676 bytes
SHA-256: e9e2738819577062fa7f324041ec402e058920c6f8fd001dba319084832edec4
font_01_sfnt_off00011337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11337 10916 bytes
SHA-256: 5aeda86b439073d9e20ab0339809706b2d24bc6a80d5ac411a76d77885ecb3ea

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