Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6a8a72307308818…

MALICIOUS

PDF

47.5 KB Created: 2020-10-11 00:49:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 88c10f46ed3f7989e90707d9bb99c1a7 SHA-1: af5e5cc5a1539d9a3403fb6af3b1e3d6cb146c8b SHA-256: f6a8a723073088180fc87228ccc2b05eb3853a00cb71c00905814130296e5a23
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://cctraff.ru/strik?keyword=mazda+6+service+manual+download In PDF document text
    • https://site-1036678.mozfiles.com/files/1036678/xoxufefuzimipiripifo.pdfIn PDF document text
    • https://site-1040677.mozfiles.com/files/1040677/nudidafedifukosewomoke.pdfIn PDF document text
    • https://site-1038924.mozfiles.com/files/1038924/61501081727.pdfIn PDF document text
    • https://site-1044303.mozfiles.com/files/1044303/14239905607.pdfIn PDF document text
    • https://site-1039390.mozfiles.com/files/1039390/kefexeliveluvodumep.pdfIn PDF document text
    • http://woruwasup.bayareabearsaau.com/uploads/1/3/1/4/131452976/5395384.pdfIn PDF document text
    • http://betorozo.impactunited.net/uploads/1/3/1/6/131636725/konutilofi.pdfIn PDF document text
    • http://xitosep.lupulrealty.com/uploads/1/3/0/7/130776750/402600.pdfIn PDF document text
    • http://sivedixe.powerlux.com/uploads/1/3/1/4/131453048/2935204.pdfIn PDF document text
    • http://files.newmontrocksretail.com/uploads/1/3/1/4/131453735/92d7629fcefef.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/1/0499/1395/4472/files/kenneth_hagin_on_faith.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4414/2245/files/target_mesh_file_box.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4448/6811/files/53658976125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/20th_century_ghosts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/pictures_for_teachers_day_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3816/1561/files/test_fax_machine_ricoh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3744/5274/files/97347337893.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_off000079ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79BA 5444 bytes
SHA-256: 58532ac54545835456f0965734f32566dc0629bfad28f8ef2c0604db89913526
font_01_sfnt_off00008c48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C48 10692 bytes
SHA-256: 6366fea75c649c3aaa23f3e49fd5525487a8194ebb6e0a5750f61c2cfe66cb80

Open this report in the interactive analyzer, or submit your own file for analysis.