Malicious PDF — malware analysis report

Static analysis result for SHA-256 0630feac8e3202ff…

MALICIOUS

PDF

50.3 KB Created: 2020-10-15 16:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 51794c63e59ab151a5ea8b6af915b764 SHA-1: df48667051f2b602b5e0c626ec5421be9936cef1 SHA-256: 0630feac8e3202ffacc078b421e568c5d5863105df46ea14fa469ed9ec6edc9a
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/pify?keyword=ik+multimedia+iloud+manual In PDF document text
    • https://site-1041076.mozfiles.com/files/1041076/monuxefev.pdfIn PDF document text
    • https://site-1037130.mozfiles.com/files/1037130/zafalagigogawozukow.pdfIn PDF document text
    • https://site-1039253.mozfiles.com/files/1039253/bunakamiwog.pdfIn PDF document text
    • https://site-1039430.mozfiles.com/files/1039430/3946326098.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/4290719.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/xopevu_vilugarokobijos_fimorekon.pdfIn PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/gefudigoramoju.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/4764905.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369494/normal_5f8818e206188.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366015/normal_5f87f47413698.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366956/normal_5f8785d2a3098.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368742/normal_5f881e01c5340.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5060/5983/files/pegahueso_planta_medicinal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5633/2437/files/59492657733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9376/3254/files/se_beber_nao_case_assistir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4075/3822/files/5826980133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7327/2996/files/mayan_statues_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/555c02cc-c4b5-4d58-be97-8fa5766e8e04/97290296186.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3de17f99-d455-43e5-bef0-d4420028e3d4/viranotitazalilitefa.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_off000080f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F2 4696 bytes
SHA-256: 065e0ca2947e610791564966e619a7688436e8d448d86def4b016a5a3eb988d8
font_01_sfnt_off000090d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D5 13380 bytes
SHA-256: a467317d280e09da2fcd6cf05f3085bc7619f7078e066204a6e1f3f8517a6a57

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