Malicious PDF — malware analysis report

Static analysis result for SHA-256 db8f92eacee3e239…

MALICIOUS

PDF

73.3 KB Created: 2021-03-01 14:45:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 26d9fd21115bcb94ea82ea553d362b68 SHA-1: 8766fe9074a95374d93ed832fb9545f62b582ef2 SHA-256: db8f92eacee3e239f5bea4900d5f294a9ed837dac07c5fc8b6676f92d2d6c68a
136 Risk Score

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
  • 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://gimoguvi.ru/wix?keyword=google+forms+database+integration PDF link annotation
    • http://sanezukevuzav.iblogger.org/agriform_farm_supply_woodland_ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470385/normal_5ff677e9e77c4.pdfIn PDF document text
    • http://rogosevit.22web.org/5397110106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479433/normal_6030eb8a42037.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479906/normal_5ff09ff39cef8.pdfIn PDF document text
    • http://pemutoguxo.66ghz.com/kevamurejowisudusabex.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/gidibesuxi/how_to_cook_and_glaze_a_spiral_ham.pdfIn PDF document text
    • http://marakolin.epizy.com/tunnelbear_for_windows_10.pdfIn PDF document text
    • http://gafibis.epizy.com/fujun.pdfIn PDF document text
    • http://riramemixezu.epizy.com/what_does_honor_my_request_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/how_often_should_cardiovascular_exercise_be_performed.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/porafifefaduragumawolenu.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/lalabeko.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/67390700784.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/delf_a1_book_answers.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_off0000e316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE316 5396 bytes
SHA-256: c8ccb0a6758101492c4f27bd6250cf4c644079a4e9c973c8d30914ee90ae60a2
font_01_sfnt_off0000f55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55D 10240 bytes
SHA-256: 4acec9b812e88092a63ab4b68e737bdf3334dd5e12b11516f84474d159f1aa30