Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb034d3803936a5…

MALICIOUS

PDF

67.1 KB Created: 2021-02-27 18:39:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 078ab064b47eb0bb9f605cdae22958ea SHA-1: b032b702f74552f237451ade5827176f411670af SHA-256: ccb034d3803936a5c98948710f46eac1a08245b03737afc0532420b9b62b8fa8
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://pelibifir.ru/wix?keyword=ejercicios+biblicos+adventistas+divertidos PDF link annotation
    • http://deteluwo.iblogger.org/51037089616.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465548/normal_5fe8a33d3efe8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457854/normal_5fe49279e8020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422912/normal_6013e9357bc6d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476943/normal_5ff0be94ea44a.pdfIn PDF document text
    • https://cdn.sqhk.co/nujoxodove/hfgiZaz/cops_and_robbers_jail_break_2_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379969/normal_6036b1990a797.pdfIn PDF document text
    • https://zeberafuduzugag.weebly.com/uploads/1/3/2/6/132682167/6354639.pdfIn PDF document text
    • https://cdn.sqhk.co/murajefovel/jicSdge/13464907777.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404757/normal_5ff76b4ec8842.pdfIn PDF document text
    • https://cdn.sqhk.co/xolovagi/fAhihcv/fomitiro.pdfIn PDF document text
    • https://cdn.sqhk.co/molewekane/eiepi0y/1627525508.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427821/normal_5fdf7fb90caa9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zilajib.epizy.com/southwest_airlines_information_technology_strategy.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_off0000c780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC780 5164 bytes
SHA-256: 04d46383b5a9fdd2db3d91860fbe89912cffa58d9d4e1ef04ff1074aebf1937d
font_01_sfnt_off0000d928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD928 11052 bytes
SHA-256: 2c116ae794c00416d06298d4e2679c062e272b9201e548da979156b382bd2bd6