Malicious PDF — malware analysis report

Static analysis result for SHA-256 563809d4acc7a1ce…

MALICIOUS

PDF

36.0 KB Created: 2020-11-09 01:55:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 2a60730481dd04f9d4307bd97279f8fb SHA-1: 4bd7556fe442bb34f6fde3a5af4f0aae2583fd7f SHA-256: 563809d4acc7a1ce518150073b333544585d587fa47ab0ad93c9e87c7534eb2a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=idhu+namma+aalu+full+movie+hd+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381997/normal_5f9c1419284c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385038/normal_5f9a2a51a8d5f.pdfIn PDF document text
    • https://mizegagemogu.weebly.com/uploads/1/3/4/6/134602102/tuzofovofixig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383464/normal_5f95b5e5dc6a5.pdfIn PDF document text
    • https://pegepefip.weebly.com/uploads/1/3/4/4/134455730/c8aae59981a9663.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383452/normal_5fa32256bebfd.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/a178c0bc-b148-491d-b7bf-3c451f047e9e/37682703581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ee08ef5-4db6-41cf-8a74-6532ec190cd2/31155741539.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27cf8cd7-694b-46f3-9c89-50f5eb38f4e1/xazak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4d2d342-ed2e-4094-ab0c-f35fde56d982/lotatelepi.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/descargar_edipo_rey_y_antigona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/306ec213-8251-4886-b524-2faffd3e4634/bones_the_past_in_the_present.pdfIn PDF document text
    • https://tarakuluraxe.files.wordpress.com/2020/11/rupibiluxujosaxozizifikas.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_off00004ae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE9 4964 bytes
SHA-256: 42ba028ce9c49d83f9b8b950b1c75648ba6ee61b34b70a3ef6359a7cc233e453
font_01_sfnt_off00005bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBD 12264 bytes
SHA-256: a02470b68b0fccfb8f0c00b0cac5317133edac5b970b79274aa047be303de4be