Malicious PDF — malware analysis report

Static analysis result for SHA-256 24320b0f821cdaff…

MALICIOUS

PDF

70.1 KB Created: 2021-02-27 01:52:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6fbb146da4ada98db7cd7ccb4eb4415f SHA-1: 881c9d951c850384549665c366332e58ddca9780 SHA-256: 24320b0f821cdafffce9c6873597cabd2730a37231db22adb9fe23a737656a17
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://golowaki.ru/wix?keyword=farberware+millennium+percolator PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403127/normal_601a68b54dba8.pdfIn PDF document text
    • http://bawazofo.getenjoyment.net/tortilla_flats_book.pdfIn PDF document text
    • http://moitender.org/cloudformation_template_yaml_to_json93iam.pdfIn PDF document text
    • http://datingdate.site/octopus_64_bit_apk_androidd671i.pdfIn PDF document text
    • http://keysecret.ru/lexile_chart_by_grade_levels5zg7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372985/normal_6006cef073fbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470207/normal_600ad627a48dc.pdfIn PDF document text
    • http://constructionhouse.info/assassination_classroom_ending_song51qqv.pdfIn PDF document text
    • https://cdn.sqhk.co/jugemito/vKorQgh/cheap_web_design_melbourne.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/woxorojero/84910107973.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/50076684139.pdfIn PDF document text
    • https://s3.amazonaws.com/dazawojob/hilti_firestop_systems_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/ils_ont_fait_l_histoire_bd.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC085 5088 bytes
SHA-256: 60878bb79f10278f14c045a7a4b6ae11bc071d90c89b411fcdea250ac767ed20
font_01_sfnt_off0000d1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CF 10388 bytes
SHA-256: 3257100825728e23d6ecbc235c5aacb051f256c3479cf05d9f1a70c7a67543fb
font_02_sfnt_off0000f577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF577 16036 bytes
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb