Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7b2f2c06e41c06d…

MALICIOUS

PDF

82.7 KB Created: 2021-03-20 10:06:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ca8c62d5938ac3a5f794a6c653c63ec7 SHA-1: ce6e7fbcd88e601749d8eb7c16389a07f2c6ea6a SHA-256: c7b2f2c06e41c06dd6d8567b2bb92ea0b91acb2b1581bff2452cf451f6babb92
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • 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/wix?keyword=dc+mongul+2 In PDF document text
    • http://luxshop21.site/jewafah0q6o.pdfIn PDF document text
    • http://mantenancie.com/little_mermaid_wallpaper_hdig028.pdfIn PDF document text
    • http://instasurprise.online/patopusitufirosezav6h06r.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/english_conversation_questions_for_beginners.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/xamibudasagas/19219246883.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/tamil_midnight_songs_kuttyweb.pdfIn PDF document text
    • http://dugerem.atwebpages.com/banking_sector_reforms_since_1991.pdfIn PDF document text
    • http://pizuzol.onlinewebshop.net/temarokefovugexu.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/97985356743.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/74667564925.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4bd09a3-8d25-47b8-a526-b27a2a010872/xiwexuzovosakexixapon.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/zemilovudogepavenitawajow.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/parquet_file_format_structure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e735b92-c74d-4bb2-8eba-539ed6ff0149/what_is_the_term_structure_of_interest_rates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c382776-be13-4e1b-85da-c10f205efceb/91062830201.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/mivixasawaxudaziza.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/4_times_tables_practice_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/12673200254.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/global_cfg_not_found.pdfIn PDF document text
    • http://bifiwapaz.onlinewebshop.net/36087758931.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/noxogon.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/44854522491.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_off00010643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10643 4764 bytes
SHA-256: 6822a5d9296ca2098084e902a489b15ab8a714e552449369f80f1e3d5f60392e
font_01_sfnt_off00011675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11675 11100 bytes
SHA-256: 30e36bcf3ecf1740e10bdb3cfda0d46e838adce5b2cbf41a554cac45080f4aa5

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