Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf282624d15201b6…

MALICIOUS

PDF

68.8 KB Created: 2020-10-30 04:00:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: b5c7b7a1a8f06be034bd93e0fe7f2b8c SHA-1: dbfa0711f7c43e644180791b54e62403f727f1d7 SHA-256: bf282624d15201b63b9c56f80b5ed28d0b3727509343f334204443c722005790
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://ttraff.me/123?keyword=tarot+symbols+pdf In PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/vabilodobafevavufit.pdfIn PDF document text
    • https://ziridizozavixik.weebly.com/uploads/1/3/4/4/134400570/fesiv-samedamovexunit-povizetatilo.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/1/0438/8831/2488/files/2333571570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d54ea5a1-03b5-42a7-ac33-ff9cfb1e51f2/3._5_character_sheet_fillable.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/xevibemabatakuxuzefupafed.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/kolenananige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0052358c-580e-4479-9e29-78f677bee423/geditolanodoso.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/bestiario_2_pathfinder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/325cf89c-e431-4648-8b1d-3b3acede2837/tafukaposedomipubata.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/social_media_strategy_presentation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9666/4989/files/geferulezu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68b4f952-c15d-47b3-815b-0a14973654b6/womirepetudiku.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_off0000d067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD067 5380 bytes
SHA-256: 5885d5d7f3baa625ce050d718e1f474a5621c2a1ed74fbd54b77a7d56e5a586b
font_01_sfnt_off0000e299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE299 10548 bytes
SHA-256: 8045683fe45c6b275ceac94ba6465dec58d0026a3ef272780ab2189254b2545d