Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2188e09148f077…

MALICIOUS

PDF

42.2 KB Created: 2020-10-20 22:51:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 150bca221b55c64d765c8500b10e3c35 SHA-1: 7497fbb00cd674ae57c13f792e424a26646b0c08 SHA-256: bd2188e09148f0775decaf26672269f32b0a6de843666c2568540cad2fab424b
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.link/pify?keyword=decamp+bus+schedule+33+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371244/normal_5f88d58cd4483.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375703/normal_5f8c59162540e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387050/normal_5f8d6d5297328.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368251/normal_5f892505a453f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388048/normal_5f8d0e79a2023.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367919/normal_5f8a48269c6f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391315/normal_5f8e5c7d88b25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379489/normal_5f8c9633a372e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f8703f01d619.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_5f89c03aa562c.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/1/0476/1452/5596/files/what_does_crossing_over_in_biology_mean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/9174/2886/files/43998784173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3104/7577/files/pseudo_first_order_kinetics_calculation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5197/3794/files/alaska_club_south.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9931/1268/files/carolina_cash_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3302/0584/files/notification_no._dnbs._193_dgvl-2007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5337/4874/files/android_qwerty_keyboard_phones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5103/1447/files/korean_drama_downloader_app_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9937/6802/files/les_gommes_alain_robbe_grillet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6499/1649/files/status_bar_carrier_logo_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/9545/0534/files/sermon_for_funeral_service.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6073/2319/files/27909244589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/9453/7898/files/32413703268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4423/1575/files/ramps_1.4_schematic.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_off00006415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6415 5600 bytes
SHA-256: 8cc6675a60cbb1354d07c5836925c1c493d6aa933c61d018fe3b5453ea6b0f5d
font_01_sfnt_off000076ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76FF 10464 bytes
SHA-256: b7a22f951e12e0f5b4f2a8bf324af11fa3d00185ea97cfed2c8c274be6b4f0e7

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