Malicious PDF — malware analysis report

Static analysis result for SHA-256 180d8d1f2ea0ce9f…

MALICIOUS

PDF

69.3 KB Created: 2021-02-15 16:41:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a82081c2d97d78976b2b07099fbefabd SHA-1: b2ce7ff48ddc5120eb9a5756027673ae76b7f583 SHA-256: 180d8d1f2ea0ce9f39036e4f2264d6dab1d4b9b178edd3fb307a7a5aeef7dd93
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://jottigo.ru/wix?keyword=plants+vs+zombies+1+apk+full+2019 PDF link annotation
    • https://karivimefoga.weebly.com/uploads/1/3/4/3/134311068/9857229.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386591/normal_5fc9de668f899.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498983/normal_5fedd88ca2d84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385004/normal_601bbb03a01d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388818/normal_601fa5e61421c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454671/normal_601b7c24bf315.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476751/normal_6000bc9dcb85f.pdfIn PDF document text
    • http://dijawobal.iblogger.org/barbie_dreamhouse_adventure_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407724/normal_5fe8bca4bdd78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382638/normal_6005fa56005be.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/bipepezuwed/36573077267.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/38198590596.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/daily_themed_crossword_answers_tv_minis.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/gre_vocabulary_words_with_pictures.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_off0000d0ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0EF 5748 bytes
SHA-256: ee58ef3b7be9853bf7c8fe6a9c91e37b8ca27f4136c931f24870aeed00e61f05
font_01_sfnt_off0000e47c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47C 10468 bytes
SHA-256: 15ac834497fedf4d734bd12f444f7e8e6e041c2141a04287feaf647df23cc4e7