Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc2c8f5d76dbc9b4…

MALICIOUS

PDF

72.0 KB Created: 2021-02-16 23:27:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c219ef3ac21d814cc6a9cd5b763e1414 SHA-1: d6206898522ec6ac496377a184f2fc325966421d SHA-256: bc2c8f5d76dbc9b4593d119c4ce9a6149e816f5f27a3eb336ce9578324bdbe2e
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/wix?keyword=positive+and+negative+effects+of+imperialism+in+africa+essay+pdf PDF link annotation
    • https://tesajezu.weebly.com/uploads/1/3/1/4/131452821/voponubir.pdfIn PDF document text
    • https://jaxedafotonomut.weebly.com/uploads/1/3/4/8/134885779/7a0c6eb614490.pdfIn PDF document text
    • https://tevukebejesa.weebly.com/uploads/1/3/2/6/132695492/50ab3fd261fc.pdfIn PDF document text
    • https://madoguwulivusi.weebly.com/uploads/1/3/0/7/130775056/lamubewevun.pdfIn PDF document text
    • https://lefizedut.weebly.com/uploads/1/3/2/6/132681647/xawuzapadaroji.pdfIn PDF document text
    • https://jaxowukijov.weebly.com/uploads/1/3/0/9/130969500/juzokajozitipe_betam.pdfIn PDF document text
    • https://minadefimufev.weebly.com/uploads/1/3/4/6/134635785/kapopekuxukefow.pdfIn PDF document text
    • https://nufewaxitobazat.weebly.com/uploads/1/3/4/7/134748461/7508502.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/sedowedi/marovudafepez.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/project_management_log_book_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/glass_painting_designs_on_ohp_sheets.pdfIn PDF document text
    • http://nutimuratibuzur.epizy.com/smartsheet_training_san_jose.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/19064179441.pdfIn PDF document text
    • http://xubedoper.epizy.com/66881160300.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/last_date_of_cat_form_fill_up.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_off0000dbc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC9 5640 bytes
SHA-256: 7d84657ec98135fa9b3f74d99037412c85fa9d6d7b00c4f5c99931a157d1ff87
font_01_sfnt_off0000eeff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEFF 10304 bytes
SHA-256: cb4a8d64ccbf2c663f8babee3ca3ac3902bba7a9613794bfaaa11f1c5e40bb32