Malicious PDF — malware analysis report

Static analysis result for SHA-256 76a268a04cfa2d8a…

MALICIOUS

PDF

68.6 KB Created: 2021-01-24 22:00:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e862fbd99d24432592d99493cf96b12b SHA-1: 4023e04b9d0325703258dbdfed75cef02f873a42 SHA-256: 76a268a04cfa2d8aa8eac6b3b01dff8d25200e12d8be18833cdab045f4f4517d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://baarspo.ru/wb?keyword=detroit%20lions%20starting%20running%20backs%202020 PDF link annotation
    • https://cdn.sqhk.co/rejinujo/gidgfhf/steven_universe_song_lyrics_it_s_the_truth.pdfIn PDF document text
    • https://favonewe.weebly.com/uploads/1/3/2/6/132695639/856cf.pdfIn PDF document text
    • https://voxisazemiruza.weebly.com/uploads/1/3/1/8/131871554/6a3f0f5bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wemubivoparuf.epizy.com/josajuxuf.pdfIn PDF document text
    • http://vubimefiz.epizy.com/terujezujafadepisig.pdfIn PDF document text
    • http://kozitoxezafovi.rf.gd/sheet_music_reading_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/vudezajoluwikowow.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/bubogulaxupamoki.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/88088816439.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/cow_milk_allergy_thai_guideline.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/pukewomupovot.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/brunelleschi_formazione_artistica.pdfIn PDF document text
    • http://nabapuxamiluj.epizy.com/12467613185.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/75796452738.pdfIn PDF document text
    • http://tupusivamiguta.rf.gd/black_spiderman_images_hd.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_off0000d0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D6 5444 bytes
SHA-256: 6a470ce6dce68d8918498c8376b6db33db1658d61e2d5a86975ec1703facb190
font_01_sfnt_off0000e36e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36E 9884 bytes
SHA-256: 3c33c60e77ef5f036596d41d2e0502868e967563b25b33d1f8c3b20ae4c56dcc