Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bae830f2b61fb46…

MALICIOUS

PDF

74.2 KB Created: 2021-02-15 22:49:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b44f6c62b13d82c644c0bc5381fff5f6 SHA-1: db0872c643cb4506df1095a03e4ce9f41d8c1038 SHA-256: 5bae830f2b61fb46e2aeb585b2e8ad4885326a4aaff88d78ed86610d0a99d2a8
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/123?utm_term=how+to+write+research+paper+outline PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413707/normal_602086f689d8f.pdfIn PDF document text
    • https://cdn.sqhk.co/vegedusovo/cHhvdgh/armello_dlc_characters.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446151/normal_601b6cdc2c563.pdfIn PDF document text
    • http://puxeguka.iblogger.org/2150031650.pdfIn PDF document text
    • http://xurixekan.22web.org/gewatafinigiwopilasitejim.pdfIn PDF document text
    • https://cdn.sqhk.co/sifajoxojif/j7jdKDa/tv_alphaville_noticias.pdfIn PDF document text
    • https://cdn.sqhk.co/kukojuvata/B3iiR3y/oceanhorn_2_switch_metacritic.pdfIn PDF document text
    • https://cdn.sqhk.co/remezebona/hihektK/coin_collection_books_amazon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bojafazes/1st_birthday_invitation_template_for_boy.pdfIn PDF document text
    • http://vudagolefedofa.epizy.com/71252034242.pdfIn PDF document text
    • http://bexumasifawej.epizy.com/90496385869.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/acupuncture_patient_intake_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/vugelitanad.pdfIn PDF document text
    • http://daxepusiz.rf.gd/lithonia_epanl-_24-_40l-_40k_spec_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/how_to_show_dividend_in_balance_sheet.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_off0000e79c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79C 5076 bytes
SHA-256: a2673a0e26b5c106e38fd0c124153cc4a42b1ef22f180e4821ed7c8529e5833e
font_01_sfnt_off0000f8e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E9 10212 bytes
SHA-256: d9ca4fdfc4cc7f505e3a6aa33f65ba9a4b6c8cdc8835b79b92077af3ba1e4ac3