Malicious PDF — malware analysis report

Static analysis result for SHA-256 adf806e4c3e40dce…

MALICIOUS

PDF

47.8 KB Created: 2020-10-04 23:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bcec15544cc72285a6a32b2cb12bda46 SHA-1: 2ae0dba8211dadd1bf93147fe0cc0e0b1f52b6e3 SHA-256: adf806e4c3e40dceb9047e760f54adfd5c4975f27f59a0e1e0c0b0c6c6ececea
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=airports+in+india+state+wise+pdf In PDF document text
    • http://files.halseyfamily.com/uploads/1/3/1/3/131383283/d6fd7b1.pdfIn PDF document text
    • http://files.davidchapman.org/uploads/1/3/1/4/131409909/veloregedekij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/00662212-8664-4c16-ace5-087ddbb4be49/kukebug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7da3fbd6-df04-4444-bfb4-926b28b09d2e/ralaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42874dfd-c562-4779-b820-542fe9bcea6c/96866445795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52dc8691-a114-4154-9de3-fa8853d47ba2/76731119027.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca35efb7-b0a8-4a4d-b535-ce0e02c4e4ce/36713768570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42ed8ea9-4ffb-4349-b00e-0c86c0170700/40306262155.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56c867da-05a4-4a81-9d17-99719cdad941/18606211753.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66131a30-54b5-406d-9c1f-9000fa06446b/jalekufapidawukedudo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a496c786-acf8-4c00-a61e-a43979555019/75905474964.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db4f7434-57a0-450a-a29e-94ad256c919c/miwomakovomikewalesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9f57c8a-cb05-4b61-b402-bd935d6d6fdf/pemimevikivadozejinorij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dafda59-d4bf-482c-8c8c-1b78414cdace/kupopemadumekokoto.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_off00007d20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D20 5084 bytes
SHA-256: 367fd4b85254b8ef1c067fe5d76d8f6e0733ca52caecde9f9775e7046be7cada
font_01_sfnt_off00008e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8E 10420 bytes
SHA-256: cc5cf04e69fd811c1539c6b48a6edfb2441dbdb4a5a64dee0d6df5a919be6743

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