Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd11d6601119608…

MALICIOUS

PDF

72.6 KB Created: 2021-01-20 11:00:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c6415bc3743963b80539aa11a3449ffa SHA-1: adfdc4167b6d6e2f2777f71ef8dc30d0d1c3e8b0 SHA-256: bdd11d660111960884bb51994f767a2aa8899c08c51b1722bfd551502c3646f8
162 Risk Score

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
  • 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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/aws?utm_term=baidu++without+account In PDF document text
    • http://tisigetid.iblogger.org/composite_materials_text_book.pdfIn PDF document text
    • http://goxakawelapa.22web.org/archinteriors_27.pdfIn PDF document text
    • https://site-1239165.mozfiles.com/files/1239165/36967978619.pdfIn PDF document text
    • https://site-1178814.mozfiles.com/files/1178814/pocket_ledger_app_for_pc.pdfIn PDF document text
    • https://site-1175392.mozfiles.com/files/1175392/woralixoguwulipojusidiru.pdfIn PDF document text
    • https://site-1172409.mozfiles.com/files/1172409/lewojozanodexafeporalare.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/sirilagewuga/luzigazonosopepenaruritul.pdfIn PDF document text
    • http://kunijudodo.rf.gd/cootie_catcher_template_books.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/jegezubebisonapazunagupo.pdfIn PDF document text
    • http://tulazupuvive.epizy.com/birenenodibusoxufixomit.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/2014_bmw_x1_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/practice_word_problems_inequalities_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/amharic_afaan_oromo_dictionary_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/amplifier_dj_goddess_remix_song.pdfIn PDF document text
    • http://nelodetasa.rf.gd/98411579767.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_off0000e15b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15B 4860 bytes
SHA-256: 94252bdef785c5c70865e4ba59c06d40ea9a1da2e7176edbef3746b3d639a21d
font_01_sfnt_off0000f1f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F9 10608 bytes
SHA-256: 29691a81700a4df1085de7594bd69c34cb0ae057d8b7ff6a22325eb7211e086d

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