Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2f3b54a03733f2f…

MALICIOUS

PDF

51.1 KB Created: 2020-11-06 01:14:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 1362caa40fb1d51945b14c619d1d44f6 SHA-1: 284235d97de0bf44d4f6e10302be7abb864f20e2 SHA-256: e2f3b54a03733f2f6eba27c296e4a5f99c9fb64630040e8d39b0a79df19ca971
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffking.ru/aws?keyword=download+adobe+media+encoder+crack+cc+2015 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404750/normal_5f92678e396c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458394/normal_5fa0a2702183a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367644/normal_5f875beb2393f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426942/normal_5fa1afb42a1cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393776/normal_5f9e29e004850.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f87086c4e88b.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://s3.amazonaws.com/minaxigevani/82517364671.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dfc8b6f-7145-467f-90d2-e993330c24be/nedeloluvulot.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/pojobelevekokax.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/beyonders_chasing_the_prophecy.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/letter_to_my_ex_girlfriend_who_i_still_love.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b68ba59b-7949-4c77-b89c-610c13041d01/63355098618.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1681a440-6424-4f3a-aaa0-16e7e905a392/allahumma_inni_as_aluka.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2E 5360 bytes
SHA-256: edcd445ee09ab0e47d5d7dead931a75f91baa2e812170d3fa5a135ffdf359950
font_01_sfnt_off0000705b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x705B 13844 bytes
SHA-256: 5c5339d18854d2b0fd246c7fded826c0d9514a64b5c877785b8dd11047066da5
font_02_sfnt_off00009ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AE2 16460 bytes
SHA-256: d40bada7374d944527ee8709ba51b02d0e9de25f73f9b8c24e62ae3778c0dd4f
font_03_sfnt_off0000b133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB133 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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