Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7b89d896f14ecec…

MALICIOUS

PDF

87.5 KB Created: 2021-03-27 22:42:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 558c6a23d5a258089f124a3090be0550 SHA-1: 25c58abed0e3dbce71ad5ac1be4c35ce5c9629a0 SHA-256: e7b89d896f14ecec5c7fbbbaa673c59d592fb70418c507364b3048c6c750e5a0
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically appearing as a search result for a PDF document. This suggests a phishing or redirection attempt to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=esmeralda+santiago+cuando+era+puertorrique%25C3%25B1a+pdf PDF link annotation
    • https://cdn.sqhk.co/wepigosogo/OQQjfii/91832520098.pdfIn PDF document text
    • http://instapodarok365.site/dezujikebizejofofevumwzc7.pdfIn PDF document text
    • http://milky-rp.space/6354037491pk0ji.pdfIn PDF document text
    • http://card2card.live/fifth_third_bank_hours_tomorrowyxxc7.pdfIn PDF document text
    • http://barashik.space/cutz_barber_shop_harlesdenidsci.pdfIn PDF document text
    • https://cdn.sqhk.co/vasinabew/jcjdghg/athenion_tactical_ccg_review.pdfIn PDF document text
    • http://hookup754.fun/pandoc_markdown_to_font_sizea557s.pdfIn PDF document text
    • http://leyloften.online/pufagodixesadovosgdj69.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f495c71d-628d-4070-9a3d-b699cbb46ba4.filesusr.com/ugd/d99ef3_9437b9981eab449fb753bf9be389a73e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/03b2b932-c795-402a-95ba-d72d8bf75f41/dowedum.pdfIn PDF document text
    • https://0feddc0e-03bc-46a3-a741-45303deff239.filesusr.com/ugd/6ea6a2_9ca18a20194244639f5665df3423ff7c.pdf?index=trueIn PDF document text
    • https://0c6b7a74-1ca0-41da-943c-c268a208a416.filesusr.com/ugd/fef373_5480c50a377c42dd9c2cc7761c20b6de.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wetevali/automation_anywhere_interview_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b576003-03e9-451d-820e-6d17df5afefd/79922940259.pdfIn PDF document text
    • https://9539e3d7-93ad-434a-85ac-22bd9bdb82bb.filesusr.com/ugd/df7b34_03d8475fabd64f6185001406d5e83343.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fizaxo/2007_acura_mdx_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b2dd92a-68b3-4a9b-93fd-73789a8d648b/32063076172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3650e6e3-cbf8-42c2-b6f2-4daee73f30b7/what_is_the_message_of_poem_fire_and_ice.pdfIn PDF document text
    • https://c2dbac7f-2075-4dc1-ad03-af0d0352bff2.filesusr.com/ugd/278743_f9cfab118e2c41c39612dd761abe4265.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/taotao_atv_review.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/62911314116.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_off000113ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113EF 5772 bytes
SHA-256: 47941b3c5d65df16f92ff5db70388f806f320c2565ca10c27dddd54d7a282d57
font_01_sfnt_off00012733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12733 11984 bytes
SHA-256: 0aec50ba4525daf8fa2fb6c7d976366f54023f2e04c55d464afd6c672d358aa5

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