Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab8ea0b1d4a29b1…

MALICIOUS

PDF

46.8 KB Created: 2020-10-25 10:01:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: df01329249e023fea813127baeb29d53 SHA-1: f21139fa0c76ed48002a5c2ead96af1c9eed0bb0 SHA-256: aab8ea0b1d4a29b1d6560c8e177ade465140a4f5b43e93599cef5491aa2c650f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://cctraff.ru/123?keyword=stedman+graham+identity+leadership+pdf In PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/9951345.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/b8f28889.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/zanazanekoxel.pdfIn PDF document text
    • https://xexovelez.weebly.com/uploads/1/3/0/8/130813416/09946aac22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377410/normal_5f8ca840ad062.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372085/normal_5f8947502c054.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369158/normal_5f946bac7086f.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/modasofibekozov-mifowatefovovo-mogeboluvawoxu.pdfIn PDF document text
    • https://tozarezev.weebly.com/uploads/1/3/4/3/134374844/dudaxeb-jogofuwini-mepex.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/nufej.pdfIn PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/vupiwup.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000076a5.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000076a5.bin)
    • https://cdn.shopify.com/s/files/1/0438/9958/4680/files/five_constant_relationships_confucianism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3471/8620/files/download_film_terbaru_lk21.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/3628/7391/files/estates_during_french_revolution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/20243522655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/makalah_masa_reformasi_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8473/4883/files/contoh_daftar_riwayat_hidup_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1013/0073/files/7981870289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8258/0130/files/neuro_oratoria_completo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0101/9030/files/56322974422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8511/4781/files/what_are_extended_content_standards.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 extracted file (font_00_sfnt_off000076a5.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76A5 5660 bytes
SHA-256: bebf5b471c0891a79ac21dc9204169c90ced039f5a0f1b6b134b5c5340774be0
font_01_sfnt_off000089c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C3 10416 bytes
SHA-256: 02950ca6f6b31674de9acd6df70a1959400cf57812e4b43a326e2baf1561b73e