Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f45fa219d108c47…

MALICIOUS

PDF

75.7 KB Created: 2021-02-08 10:38:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9d71997e7a264b6117e7a908b5c5f3b0 SHA-1: 30b1489471dd78e40da4f81b2eec8a80dcaa9f42 SHA-256: 1f45fa219d108c478f16a8bfbbfcd744a7e08e4287a5857c94d16cdd0690b55e
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/wb?keyword=all%20in%20one%20toolbox%20pro%20apk%20mod In PDF document text
    • http://trikolor.site/raxebuwaxj7fk4.pdfIn PDF document text
    • http://tobubolixej.iblogger.org/activated_carbon_definition.pdfIn PDF document text
    • http://unityfree.xyz/oxford_duden_german_english_dictionary4nmzz.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/jgWhLjh/harry_potter_hogwarts_mystery_cheats_unlimited_energy.pdfIn PDF document text
    • http://weraka.online/science_of_sports_training_thomas_kurzg1812.pdfIn PDF document text
    • https://cdn.sqhk.co/xakurusuk/hfiibd9/children_s_words_beginning_with_gle.pdfIn PDF document text
    • http://dikiradojasika.iblogger.org/febadoduxebuzorerotozojew.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/hhfDco4/george_strait_songs_love_without_end_amen.pdfIn PDF document text
    • http://nibuwuwoxupe.22web.org/dufojot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gidubivej.rf.gd/least_common_multiple_worksheet_answers.pdfIn PDF document text
    • http://jubarexapub.epizy.com/platform_brogues_womens_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/44609927170.pdfIn PDF document text
    • http://gegenig.epizy.com/11204270935.pdfIn PDF document text
    • http://numaripokusuj.rf.gd/crying_cat_meme_template.pdfIn PDF document text
    • http://labutebumir.rf.gd/jegasoxoguzebe.pdfIn PDF document text
    • http://sodexodape.rf.gd/whatsapp_sniffer_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/bepugokesutometowipep.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/rasidisemomum.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_off0000ec06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC06 5188 bytes
SHA-256: 9c74d8b30b7b7b1861a0c126c68da216207b0999ec0fcc37711d0f70006e710d
font_01_sfnt_off0000fd90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD90 10660 bytes
SHA-256: d4f63cec4d5f6ccda1f31ce676d955d04b4c18553a171c97359c6a954a58ba9a