Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea8e5e2ffaecbba5…

MALICIOUS

PDF

71.3 KB Created: 2021-02-26 04:05:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 89f6204b9518e7ffcd142560d5194750 SHA-1: 5b4cb0ea0d2f6714ba1248c027eea4181d039efa SHA-256: ea8e5e2ffaecbba5c303058a127a7e69515fca53c5964b8edd2624ad6d8d98b1
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://leonvi.ru/award?keyword=sony+xbr55x850c+3d+glasses PDF link annotation
    • https://cdn.sqhk.co/bamosabubesi/SihFV55/kawuxolilasuxutijanoz.pdfIn PDF document text
    • http://gatowixipeba.mywebcommunity.org/nujuroxidifowala.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411683/normal_60311a996f3bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369324/normal_5fc9c12788a7a.pdfIn PDF document text
    • https://cdn.sqhk.co/jijasitov/ggDhhbZ/52736038624.pdfIn PDF document text
    • https://cdn.sqhk.co/zijopenuxafi/giajchj/thrifty_nickel_lubbock.pdfIn PDF document text
    • https://cdn.sqhk.co/koletexun/Hi5JiaV/crazy_ball_3d_facebook.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5fd330186e252.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449178/normal_6026d34e0f0cd.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/fexuror/vixovivowixilimusugagupo.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/84732565208.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/277448921.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/ielts_writing_band_score.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_off0000d68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD68A 6144 bytes
SHA-256: 93b7e4d0c9aed204d8c484d8ccd54e6c94190e31bf32c2a4b3568c2a6a3208b2
font_01_sfnt_off0000eb82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB82 11088 bytes
SHA-256: 822531d68874660af290662c37e52f9c835a6532d7bc5e61ef82d5fe79650aef