Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda06d42878d1df4…

MALICIOUS

PDF

56.7 KB Created: 2020-10-16 11:09:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e1dcc91f6c04fe388583217442ce39e6 SHA-1: a1ccd155d6dd340014fd0e666d25fd53372e8d57 SHA-256: dda06d42878d1df43fe8f552e8f2204dbbe943f8f93ab03742fe5bfacb39fa9d
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?keyword=delicious+emily%2527s+road+trip+apk In PDF document text
    • https://gamupizesusaza.weebly.com/uploads/1/3/1/3/131398140/7e336e.pdfIn PDF document text
    • https://sovopubi.weebly.com/uploads/1/3/0/7/130775052/lixusewasaxaxa_nosesijuro.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/tixobenudofezibet.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/62ef76e1176b55d.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/d2ed8d8fa88d8.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/2974814.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/zananadag_momazeji_zosud_raxejagemedi.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/xewewasimabapap.pdfIn PDF document text
    • https://sevanilab.weebly.com/uploads/1/3/1/4/131437268/guzakevaped-dodaxu-turuzaz.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/dulevukikesejit.pdfIn PDF document text
    • https://xawuwotogot.weebly.com/uploads/1/3/2/6/132695388/8749264.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/7d7b6617ab8.pdfIn PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/xanilo_diminakobena_rowowaxakigo.pdfIn PDF document text
    • https://pituluwo.weebly.com/uploads/1/3/1/4/131437949/bifoz.pdfIn PDF document text
    • https://takijotirodone.weebly.com/uploads/1/3/1/6/131637658/nazuvo-wuded-dukizemitepibes.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/8069911.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/pejixijesoba.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/6e5c8a73.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/805d3224-1652-492b-8020-15c9dfaa9125/wivofupesofudoju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0386b00e-b3a1-40bb-9c53-7a8ade217be6/sofamixojus.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9D 5416 bytes
SHA-256: be87030207c56bc9da4c44b12a379d169fa6f3e3ac15ae18930b94cfbb532e29
font_01_sfnt_off000080f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F8 5364 bytes
SHA-256: 0f4527a7602a56e16cd6dd2cd6cb38b710458f6c1660a962e7ee3608232db125
font_02_sfnt_off000094fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94FA 10524 bytes
SHA-256: 2ddb099666fbdfe7672a06e5b390dc6b5ac5b76bba015a61a36313c568786ad1
font_03_sfnt_off0000b926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB926 18204 bytes
SHA-256: 2fc347a4913a29fea31f848295af70c5304876d7124a3bcc13d81126bb14183e