Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceedcce3ee4eeec7…

MALICIOUS

PDF

71.8 KB Created: 2021-02-20 21:06:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 81aa8f86321d810ce2f13c7ffa728056 SHA-1: 833167f17609e1b713902f6164821e413c740955 SHA-256: ceedcce3ee4eeec7c1f7b33a0f4a91809e3f0e325697f24cb9b590f39258df2b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wb?keyword=what%20does%20pass%20fail%20step%201%20mean PDF link annotation
    • https://sufogewanogona.weebly.com/uploads/1/3/1/0/131070160/josuwi.pdfIn PDF document text
    • http://prodson.space/rijibokodakuwabarumout.pdfIn PDF document text
    • http://insta-sale.site/des_sketches__lire_et__jouer_gratuudsla.pdfIn PDF document text
    • http://hackins.site/azamara_cruises_cancellationsb8ha6.pdfIn PDF document text
    • https://genebametujo.weebly.com/uploads/1/3/4/9/134904617/tifekelewolodonuta.pdfIn PDF document text
    • http://sipoxamux.22web.org/89048741118.pdfIn PDF document text
    • https://sukorason.weebly.com/uploads/1/3/4/5/134578332/bikijik.pdfIn PDF document text
    • https://jodajapiguzok.weebly.com/uploads/1/3/2/7/132710756/tukokizapifo_rikil.pdfIn PDF document text
    • https://putoluvutawubu.weebly.com/uploads/1/3/1/4/131437806/wakafekojaz-fiwef-puzodokazor.pdfIn PDF document text
    • https://soregekewo.weebly.com/uploads/1/3/4/2/134266411/fugarase_mapuduvegevuv_memigizezub.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/lakujusitejojet/high_school_chemistry_dimensional_analysis_worksheet.pdfIn PDF document text
    • http://kixixiwibatogit.epizy.com/jitadopatemarijad.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/bazewegofitibi.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/christmas_song_free_jingle_bell.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/guvalovezaro.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_off0000dd3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3D 5248 bytes
SHA-256: 24ddf8dbd393c96930db4aeab6bd67074730cde1baf884404173b490dc8f3aed
font_01_sfnt_off0000ef0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0D 10488 bytes
SHA-256: 18aaa388fc79e8c23963c820201defb1f52209a8dea2846cba5b5c77fcb9430f