Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7e4d9b99ccfa660…

MALICIOUS

PDF

41.2 KB Created: 2020-10-30 21:19:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ed94b5a957db7637c18eff60966e63ed SHA-1: 9051eecc9d470df278bf04a1040e8269194120c5 SHA-256: a7e4d9b99ccfa66018aacc80cd0cd1e5fe043352e9622e3487a98abc061aaa3d
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/pify?keyword=mountain+river+handicraft+incense+holder+australia In PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/xejoxizuzife-xukot-ligoburoliduses.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378165/normal_5f9675cf2fba6.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/5b1a7d20-1b60-4059-ae5c-46ac024eb564/how_to_read_literature_like_a_professor_chapter_12_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3751ae62-5359-4f8f-b642-53f7270e39d4/noligogejeviku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7464/8232/files/7969737577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/1489/3980/files/5993508153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1593/7441/files/33300228694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cfb2114-e092-41aa-9c09-71a878b8feec/xemavagogorirajekanigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8829/1012/files/41400768959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8920/8493/files/application_of_forensic_anthropology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6138/7676/files/32404138366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3629/0467/files/tlcharger_gratuit_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b691cad-4fe6-4e98-8fce-e6487288ee05/87036197691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8562/7039/files/sajikopenesosedi.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

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E7 5172 bytes
SHA-256: 0e2557cc9fe2d0fc3c70fc3fbebabfd716058ef5e2e14aaad92e60306565c62e
font_01_sfnt_off0000768f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x768F 9608 bytes
SHA-256: 4fb5561f9987ee4d1f57b0e9ae64e2ac67628477b56830855186cab965997692

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