Malicious PDF — malware analysis report

Static analysis result for SHA-256 0822eb054777eed0…

MALICIOUS

PDF

71.1 KB Created: 2021-02-23 11:48:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 377babce59f9aa856a512cd31dd2e955 SHA-1: 3fe8341e0e934139caff06dc7b4ae1355e58bee3 SHA-256: 0822eb054777eed0c67ee1622dcac6bf0aac1ff84cb0a35fbc973dfbbcdf5ac7
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://jacksth.ru/wix?keyword=constitution+clipart+black+and+white PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454820/normal_6019a7380b8ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394066/normal_601fa23f39a13.pdfIn PDF document text
    • http://prizinsta24.space/kevin_love_injury_report_rotoworld8ehh3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478950/normal_601410ff440ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386620/normal_5fe27843f0ee6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529977/normal_5fe9cac3ee715.pdfIn PDF document text
    • http://epaytds.xyz/83032410311meroi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379473/normal_6010998377a52.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417206/normal_5fdea19dc62a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387420/normal_5fd3408c2ba27.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459177/normal_6001f66b9e672.pdfIn PDF document text
    • http://prizinsta365.website/how_to_write_a_paper_about_yourself_without_using_izrfhv.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/savukojubusum/tamil_movie_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/chakithaya_song_karaoke.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/renukigafalovetus.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/25600315311.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_off0000d9f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F5 5364 bytes
SHA-256: 3ca1b3237ec3b4f3430297fd62170489d057fbb4d5c1bda4c7d17d37ba0a5562
font_01_sfnt_off0000ec30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC30 10184 bytes
SHA-256: 4146bd5d3ef610037ad3e6e3f6f294f8f04229118b39e11876d69e43a769026a