Malicious PDF — malware analysis report

Static analysis result for SHA-256 2428f4a5caa66aa1…

MALICIOUS

PDF

51.5 KB Created: 2020-11-01 07:07:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 96d01b607725bf0b7945c806a6a3c97c SHA-1: 48d08fd2e64f5b116147d9c5a1f5991e7b988215 SHA-256: 2428f4a5caa66aa1c9c788c7464f3ea93348025bc8d9ffca87967f478cf7c9f1
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://ttraff.me/123?keyword=shayzien+house+favor+guide In PDF document text
    • https://didipovewefof.weebly.com/uploads/1/3/4/3/134306756/kawiledufizetefox.pdfIn PDF document text
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/sobirowi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f8722fea27c3.pdfIn PDF document text
    • https://jibotofixox.weebly.com/uploads/1/3/4/5/134502829/1b2df19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426551/normal_5f9ae40f9033e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fajixe/kedotoropaxano.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/bioavailability_of_nutrients_for_animals_amino_acids_minerals_vitamins.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7276/1239/files/dutorezidutizifes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a274968-5527-4af8-a586-9e9452af76b2/witcher_2_romance_options.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f106e56-f572-47d9-ae36-cd271308126b/74674757262.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bba6ef50-bb05-4618-870d-a0317c98dc10/narifot.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB6 5256 bytes
SHA-256: f5f8ac136c0c42068ad3fbc2aeade78c847119fbaf38d10334f02490dc0ade92
font_01_sfnt_off00008e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E90 10852 bytes
SHA-256: ff6e3857417ed65c5059c2c10586bc411db270f429d9d3f91ffa8b6afd94ad68
font_02_sfnt_off0000b390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB390 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71