Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d7700cd12f5f9c…

MALICIOUS

PDF

43.1 KB Created: 2020-10-15 22:35:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 733eb8bc6ac1729974bcdbc95dc6c74c SHA-1: d5dab3252ccf5ef3a9b7155cadd772a0141eaef8 SHA-256: c3d7700cd12f5f9cf5935e42e066c5c6a63daec3876f33694f8ab65bd1e00b0f
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://gettraff.ru/123?keyword=coopers+lager+beer+kit+instructions In PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/1644552.pdfIn PDF document text
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/5041229.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/vunidixeviro_xitosujitupile_kadape.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f874273968c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368758/normal_5f8811bf47c9a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/20d7d1d1-4432-4150-8517-027dd5f1194e/liwireperuxovu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28965462-feef-4a63-9c7c-a67bc6e12a1e/69049989929.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cba01994-f6bc-4d43-aa5c-a4933edf08f8/66285306235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5437/0468/files/dnd_5e_warlock_spell_slots.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3543/8499/files/vanessa_jason_biology_roots_photosynthesis_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5586/6263/files/civil_works_administration_outcome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7724/8192/files/jaliweta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/18735758558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5281/3466/files/beau_rivage_concerts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5362/0644/files/naxadumozojikifuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4694/6974/files/39112612340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2448/0416/files/harlem_link_charter_school_salary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3044/5731/files/puguf.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B2E 5212 bytes
SHA-256: deb28f7381ab5ae0c5dd13fdd2b35862b2a9fcd940bf0b9becc0742dd83af0aa
font_01_sfnt_off00007cfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFB 10016 bytes
SHA-256: 9de75d4f827c62261be1fee8398486dac4c139d83b534099e2ddde2beaf91780

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