Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d9022305726d1b7…

MALICIOUS

PDF

45.4 KB Created: 2020-11-02 07:07:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 1087ad126cd3049f7663599408ecd311 SHA-1: 58060fa3c9259440e08501bcfb3c9bd4f8e2283f SHA-256: 6d9022305726d1b797ec224a789739daeb81590c36d9e117f48b7bbc229f016e
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://ttraff.link/pify?keyword=occ+guidelines+for+banks In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377936/normal_5f8aa0714fcc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375700/normal_5f9b39454ebe1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f8bbf529e2ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380405/normal_5f90b8af419c3.pdfIn PDF document text
    • https://firerokuk.weebly.com/uploads/1/3/1/1/131164187/javikupi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420599/normal_5f9abed7c6262.pdfIn PDF document text
    • https://palifeselaliku.weebly.com/uploads/1/3/4/4/134441248/1368864.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391335/normal_5f9f5d33a76f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379969/normal_5f95869171ab4.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/1/0501/6705/4517/files/nutribullet_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9420/7381/files/asi_se_dice_workbook_answer_key_spanish_3.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/ugandan_passport_application_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5520/0447/files/fokojobexokenuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6734/1974/files/alteraciones_geneticas_cromosomicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7630/2486/files/transferring_whatsapp_data_from_ios_to_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1979cf8b-ba3e-4697-bca3-f681885dbb48/vadibuvutasibivaravu.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/20453626602.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_off000072c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C3 5420 bytes
SHA-256: bb9a02253f1bf11c7c03bb510bbea989684e2000c79cd1a0eb3eb1cbe055dc66
font_01_sfnt_off00008545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8545 10408 bytes
SHA-256: 8579ac6a3ecc61c3db584aff306cfeeea53af227c087b22b93448999b2df94cf