Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d8a964fc7a7312…

MALICIOUS

PDF

70.6 KB Created: 2021-02-24 08:39:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 03516b22f35a7d22b9250f3e18ac18f5 SHA-1: 2304608acce767c7e8e134151327b3070bc6fb17 SHA-256: c2d8a964fc7a7312dc57dca007c8f01ccb82176cfea7553af21bb22d7ae99b98
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=mighty+bite+dehydrator PDF link annotation
    • https://wumudirega.weebly.com/uploads/1/3/4/5/134515906/zuvumejeroga_zudifebasikubi_sejig.pdfIn PDF document text
    • https://cdn.sqhk.co/nepusoliweda/cK75gf2/veledikojazokug.pdfIn PDF document text
    • https://vopuxobud.weebly.com/uploads/1/3/5/9/135974080/rulepomeg.pdfIn PDF document text
    • https://xurekibovadava.weebly.com/uploads/1/3/0/9/130969225/4512652.pdfIn PDF document text
    • https://fetezubusob.weebly.com/uploads/1/3/2/6/132681625/4340749.pdfIn PDF document text
    • https://cdn.sqhk.co/mifaruzamexu/hahgvhd/zumenebazexu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gexusapinofuvep.epizy.com/6705924623.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/content_analysis_of_facebook_posts.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/zevadijibowajafapokulezuw.pdfIn PDF document text
    • http://joxowosikaze.rf.gd/annual_report_nestle_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/suwidejanu.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/bezubaan_ishq_full_movie_filmyzilla.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/kozalobasesu.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/takari.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/60700318494.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/bleacher_report_ncaa_football_picks_week_3.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/41961632694.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/8392753057.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_off0000d8e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E4 5124 bytes
SHA-256: 6c34b2910219e97dbe2f3e3890b9398de8277cab25b78df6c278daaa223f6f12
font_01_sfnt_off0000ea5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5C 10272 bytes
SHA-256: 5f36b1d3ec22d68d915665ceeb23d4187b238e128820e53e4aa2088b54ffe495

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