Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1439520832161b6…

MALICIOUS

PDF

51.5 KB Created: 2020-11-09 05:49:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: c9086d93fcdc6095c6ee11444c313d26 SHA-1: 13c77e0822c208982314487ae071103a84362a66 SHA-256: a1439520832161b6596b5cc6b102e4f4047ed610391b4a3938f775daf48ea7ff
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://traffine.ru/123?keyword=closest+airport+to+joshua+tree+national+park In PDF document text
    • https://pukaxonimuno.weebly.com/uploads/1/3/4/4/134435323/jotunuxizosujipituku.pdfIn PDF document text
    • https://rofexigu.weebly.com/uploads/1/3/0/7/130738805/ff55ecd3af.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/muxozuvalubi/aphrodisiaque_pharmacie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f64631e9-e6ce-495a-9ee9-e97370859066/gmat_official_guide_2018_bundle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3bd90e8-a489-4836-a664-eeccc7d43e90/ziwosufitisen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4918f052-cefe-4946-ae34-728c916e2566/zatid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06f4bcca-c1cf-4d78-a4de-9e9dc1cfbde5/xuruxedemekemin.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/bangla_golpo_book_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b154ee9-4343-4aee-b156-8f12d79359b4/97231870371.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/215c441c-5981-48ab-833f-00a0f8a4476e/72501229139.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e73307ef-836b-46b7-868b-9d51ee4ee8cc/398920181.pdfIn PDF document text
    • https://kuviwos.files.wordpress.com/2020/11/forty_eight_laws_of_power_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8667887c-5999-447c-abbb-ec7ab61db2bd/6650817154.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_off0000896a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x896A 4952 bytes
SHA-256: 4562e2ff515c54ee2491f69ca087d793e44686aaa3ac71886e4801d1301e95fb
font_01_sfnt_off00009a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A35 11444 bytes
SHA-256: d983c744e745e2871cc149ecd7609fe08024ca9a994ec6ab2ee2c307db52f515

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