Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bbc33e7f5fc8f88…

MALICIOUS

PDF

82.9 KB Created: 2021-03-05 02:53:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b2a6059fe4a9022690550410d61d895e SHA-1: c55db9c0af27438c33f2b93551d8d82c16c2b69c SHA-256: 7bbc33e7f5fc8f884c70b7ba51d8361ecfaa235900c52fc169ad947f8be4de52
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://baarspo.ru/award?keyword=the+wrath+and+the+dawn+reading+order PDF link annotation
    • http://idealslimitalia-official.site/gojefilubukoxenob2eyot.pdfIn PDF document text
    • http://eliyalte.com/558904101773cr4r.pdfIn PDF document text
    • http://solavopuna.22web.org/xigogalufawazufatosusetos.pdfIn PDF document text
    • http://wowitaly.space/brand_new_science_fiction_zipccl7d.pdfIn PDF document text
    • http://kzrovk.xyz/mariam_khan_reporting_live_show_timingtuok8.pdfIn PDF document text
    • http://wellwork.site/2702843680z4wc7.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/tuletivotarupu/battlefield_5_beta_ps4_not_ing.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/cranial_nerves_and_their_function.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/zowalur.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/if_you_care_baking_paper_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/opera_browser_free_windows_xp.pdfIn PDF document text
    • http://nigukeja.epizy.com/leisure_bay_spa_jets.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/fizopijebugora.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/87870747091.pdfIn PDF document text
    • https://1864c106-1a4f-4194-99fb-dabd5a0af450.filesusr.com/ugd/17b194_0293eada1eb74265a066dadd2fd8429f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/18839203787.pdfIn PDF document text
    • https://2b81f3f0-3f46-42ff-87a7-5865dd96cd3c.filesusr.com/ugd/fb41f9_6530577b69294ea1a04f336a776d4b4f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/kerboodle_textbook_answers_a_level_chemistry.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_off000107c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C7 4920 bytes
SHA-256: 9019295f80d77d1747520950d563aabc4645b0169a18ca1043cb66950f490a21
font_01_sfnt_off0001188d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1188D 10664 bytes
SHA-256: a61542c76f96525cc0d6433c9520ec58bc4c577a0e42d1c0f3fbbb914296c928

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