Malicious PDF — malware analysis report

Static analysis result for SHA-256 413102b240ec0404…

MALICIOUS

PDF

52.8 KB Created: 2020-10-26 13:12:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 8427eb6bca71d673780b3b7e8d932b72 SHA-1: 6f585fc0ea06cc2caaf320e42bb11d112c26a47b SHA-256: 413102b240ec0404802a4fd744df767a84ee9296f39aed3464165e8115e96da9
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/aws?keyword=vegan+bodybuilding+fitness+pdf+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f870920c8535.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367920/normal_5f8826f88667b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380403/normal_5f8beb3fe021c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371514/normal_5f89d953d9495.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374024/normal_5f9304977bb4c.pdfIn PDF document text
    • http://www.opentle.orgIn 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/cff3020a-8b14-46a5-9f9b-2aa648ab69d8/pexizu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e06943cb-4adc-4a3b-84b5-362e02a1b1ea/42676025568.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0af303b-6a5f-4df7-9f7e-9f99709adecd/29168119219.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/insurance_awareness_book.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/16083443028.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/bumutajage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ee2ebde-274f-44b7-9385-a36a48c24a09/garuliwoloximupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d9b3533-9938-4e97-884f-1c3e2a4baf53/58999015828.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83e521e4-1f51-4b1c-a3c5-04437ec1f942/gosoloxolezolaxezirap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93f39a32-cd0f-4266-9012-66cd424b2f06/60928453730.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/regevizin.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/list_of_car_insurance_companies_in_south_africa.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00007366.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7366 16232 bytes
SHA-256: dbf13ef7eabdbaf2564f888d366a9e49b16b5305f4a895ccc8ee7ecce277c468
font_00_sfnt_off000060da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DA 5412 bytes
SHA-256: ee8f3f054118e8dc20067ab02e36eed46dba55171260089b66400edce3b6878e
font_02_sfnt_off00009f69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F69 10688 bytes
SHA-256: bf0ba1f18039f4c6f1c2fa67db0f5bcd475e229cc5b5e90d15e676cb9057b725

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