Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a704bef22142e4…

MALICIOUS

PDF

45.7 KB Created: 2020-11-08 23:19:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 565a15b6feb25123c579c1c704071695 SHA-1: 0eb67c53fa194125e661fd9b0f2e705cdfef506b SHA-256: 30a704bef22142e47ad005dd55275d881860bea9f574faefed35f8442b47101f
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://traffking.ru/aws?keyword=ff14+desynthesis+guide+2019 In PDF document text
    • https://somisesi.weebly.com/uploads/1/3/4/5/134523690/givevazejaxis_fatupolikare.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417525/normal_5fa40e9de0a43.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/jusigefa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385620/normal_5f911d00b7738.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/dukuz.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/1396268.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/fejenijovekozu/77108109838.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7907d74b-62ea-4343-91e3-3b29970ee412/83906318050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75ee138-529e-4021-8ced-a2e1aceecdbc/85134915221.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/mavic_pro_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eb329da-67b4-4067-a10c-97d3276e64f6/11339973271.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bb5f623-f3c2-42bc-be16-fd8c29c33028/b250xt_bluetooth_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3969e0d-54de-4d64-b2de-8ea793db1e6c/lubapomutekusono.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_off0000725b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x725B 5456 bytes
SHA-256: 2bfccd613ddb63f8fa9511e50ec9f3d98a273736d7af67e3b3ee275ee54dd538
font_01_sfnt_off00008504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8504 10940 bytes
SHA-256: 76622a7a7aa1766b6f425eb8186c87fbddae0c387d46297520bbc984662fd699