Malicious PDF — malware analysis report

Static analysis result for SHA-256 56449de1006344e8…

MALICIOUS

PDF

48.4 KB Created: 2020-10-15 16:21:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4ba9b5956a85b431f2e9c691301cbc3d SHA-1: e93b5af390f757c1ebf70f88f873bfa810f70fef SHA-256: 56449de1006344e8be39c966a0bd862c43cb67df9a584ff75f36b0790856e585
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=get+screen+orientation+programmatically+android In PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/66cab.pdfIn PDF document text
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/limadizade.pdfIn PDF document text
    • https://jobubati.weebly.com/uploads/1/3/1/4/131453688/9010717.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/fibawubaxavuvabu.pdfIn PDF document text
    • https://tudupumodowi.weebly.com/uploads/1/3/1/4/131406798/vixezuxapa-texewenagig-dewuxukazavi.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/6835051.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/9706257.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/dbbd04.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7304884.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f87204e36362.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366369/normal_5f876b95389db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f87d61a9a677.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367631/normal_5f8757ec23d4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369507/normal_5f882438681e7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6875/1523/files/weld_county_sheriff_daily_arrest_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5565/1743/files/67420896347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2536/files/remove_adobe_genuine_software_integrity_service_osx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9436/3297/files/19409236168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4133/9030/files/fomokabakagolebuxodomeged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/catalina_high_school_yearbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3677/7877/files/87378359333.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6669 5316 bytes
SHA-256: b6c7d45b6ace191ec3d6e5b16aafa63668cf74bbca42a723e642957a9e4da92c
font_01_sfnt_off00007867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7867 14428 bytes
SHA-256: ee64642832f760cdf6990e216cde088149f4eab2c446a8e2ddef9678036c184a
font_02_sfnt_off0000a5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5F1 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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