Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb2c59079747fb3…

MALICIOUS

PDF

47.5 KB Created: 2020-11-02 20:02:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 299b67e07d65d7495ba77f09e4ebefeb SHA-1: 9cfbdfcfb7f587ae09850bb2dd9c4faac9310845 SHA-256: 6fb2c59079747fb3c0d26461a8b3bd6829874a5f66ee8aa8c951697677fc5306
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/aws?keyword=star+stable+star+coins+hack+2018 In PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/rovumotokutebu-bologupi-zavijodorap-kukatoxepi.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/b7665c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369771/normal_5f8948b2f3665.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/posufij/sotiku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c2db4a6-e630-42fd-b0d9-d18a1539f118/pefaj.pdfIn PDF document text
    • https://s3.amazonaws.com/taruzudov/best_working_torrent_sites_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5374/9701/files/aws_certified_solutions_architect_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aa266ca-f36a-4d57-8846-abd56ba545ac/age_of_conan_atlantean_shards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/8375/7221/files/zolumog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5312/5284/files/heartbeat_choose_your_story_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7557fb1c-b5ac-4ad3-a4a7-42bc7cd37b03/labawixefixepamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0329/5736/6463/files/just_build_lol_1v1_unblocked_66.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d8f64bc-84d8-4387-9bd6-3a47a7d396ce/what_do_we_say_to_death_not_today.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/tejesuzuvexevelezisamuw.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_off0000782a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x782A 5716 bytes
SHA-256: 06254effc27cce9854eb32b1b4fcb2428123424d3f14066c419f35cea8ff2082
font_01_sfnt_off00008b95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B95 11412 bytes
SHA-256: aef16da3d25f60114d6f7b2650f942ad8121a9f36f6a0ec3aaf00f3bae35c1bc

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