Malicious PDF — malware analysis report

Static analysis result for SHA-256 88211db9c8c0b868…

MALICIOUS

PDF

75.7 KB Created: 2021-02-22 11:08:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a2ad747737b3cc0c7227f52d6d8ddda1 SHA-1: 63cb933733067b9cd14161a39f3420538c8d2151 SHA-256: 88211db9c8c0b86874adbdce7735a060f59e9c65cab520b8ef1d0b5f50007dcb
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wb?keyword=world%20war%20z%20ps4%20crossplay%20pc PDF link annotation
    • https://gojijaxokan.weebly.com/uploads/1/3/0/7/130739343/buduneguwiwimop.pdfIn PDF document text
    • https://gozerezujokosas.weebly.com/uploads/1/3/4/8/134856803/sisusurus-korewugut-tazijabula-woxafu.pdfIn PDF document text
    • https://xevoniwibefi.weebly.com/uploads/1/3/5/9/135984774/3355707.pdfIn PDF document text
    • https://xizadububexo.weebly.com/uploads/1/3/4/5/134595199/8c0a781126.pdfIn PDF document text
    • https://girenofozajete.weebly.com/uploads/1/3/4/4/134476001/00ffe92504b.pdfIn PDF document text
    • https://wadezadoli.weebly.com/uploads/1/3/0/9/130970015/vepetiterigenix.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/kovilowab/niwutobijutaxilebenekejus.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/google_sheets_calculate_days_between_dates.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/nous_informer_si.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/zebobegidige.pdfIn PDF document text
    • http://katanitape.rf.gd/how_do_you_delete_search_history_on_ipad.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/30534086468.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/identifying_theme_practice_2_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/drawing_for_landscape_architecture_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/63879817059.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_off0000eb61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB61 5412 bytes
SHA-256: 8cd8d79d99e5866999a7fb53906654e98ac9e3c7d91b138594d42c69a451f44d
font_01_sfnt_off0000fe05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE05 10628 bytes
SHA-256: ddb8d331511a0d4d81c8e10301377b43956dfed94c923f46df646e365667c602

Open this report in the interactive analyzer, or submit your own file for analysis.