Malicious PDF — malware analysis report

Static analysis result for SHA-256 45799aca576e6047…

MALICIOUS

PDF

78.7 KB Created: 2021-05-19 23:37:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 0222e4e8d192dd1471e2e811bef9a2f3 SHA-1: 7b6f2c3102a9a3728cfb1197b6420d0b61cea32e SHA-256: 45799aca576e60470f250c2e081ec1b6fbd68153f857baa2795700726bcc48a3
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are to other PDFs, suggesting a link farm or redirection mechanism. The primary external URL points to a search result page for a movie, likely a lure to disguise malicious activity. ClamAV and ML classifiers strongly indicate maliciousness, and the PDF structure with numerous external links aligns with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://botokaw.ru/wb?keyword=watch%20twilight%202008%20full%20movie%20online%20free%20fmovies PDF link annotation
    • https://bexudedumazises.weebly.com/uploads/1/3/1/4/131406785/e0d1bfe787166f.pdfIn PDF document text
    • https://kusonanozeko.weebly.com/uploads/1/3/0/7/130775507/4582309.pdfIn PDF document text
    • https://pamimimafe.weebly.com/uploads/1/3/0/7/130775080/4049272.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470537/normal_603cefe096320.pdfIn PDF document text
    • https://zewabezasakaru.weebly.com/uploads/1/3/4/5/134593707/0aae0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469365/normal_600316a429042.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/tosego/mavugozinazifopazudari.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/nizokepugoluba.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/charitable_incorporated_organisation_accounts_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/chapter_4_periodicity_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nafamaragisek/abul_kalam_azad_information_in_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/apa_contents_page_template.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/gujegapurifasorazafokaf.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/64512570133.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/33536115461.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/osaka_travel_map.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/20413529503.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/finebopujasejirusa.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/capgemini_interview_questions_for_freshers_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/chitty_chitty_bang_bang_song_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/the_maze_runner_book_2020.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_off0000f3a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A5 5928 bytes
SHA-256: 1b8f12a36d3817b25878bbc17ef57060b8d41ea8e565cf1eeeebac4aee5d873f
font_01_sfnt_off000107cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107CC 10976 bytes
SHA-256: 6a258c6fe8ce4b46b5280f4ce1c914d4300a548cddaa054195750a790d6da777

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