Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ea8cbb938eab802…

MALICIOUS

PDF

45.4 KB Created: 2020-11-09 03:50:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 4e9bfe02e68806f25264e588bcaf4773 SHA-1: aa20c76375a9c54d6113f213c851723c78d2eb39 SHA-256: 1ea8cbb938eab802927ac4258a5f40b33e02eb296be84ac99a58811b4cd1554d
126 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.
  • 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.
  • 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/123?keyword=linear+factorization+theorem+calculator PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382779/normal_5f9c819c76aee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455658/normal_5fa17d9379fc5.pdfIn PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/rawexupeladujefi.pdfIn PDF document text
    • https://xobijetulotifo.weebly.com/uploads/1/3/4/2/134234675/rewatupajinini.pdfIn PDF document text
    • https://bujibapi.weebly.com/uploads/1/3/4/3/134383234/7970625.pdfIn PDF document text
    • https://dumejolizaxoko.weebly.com/uploads/1/3/0/8/130814858/tutiredonijosereli.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/f0cbe1b6-366b-400f-b84f-91132a9ad300/sawijuvebedumat.pdfIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/merozasopegujibe.pdfIn PDF document text
    • https://bojowekig.files.wordpress.com/2020/11/wulefinarinuzoranosazo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A03 4936 bytes
SHA-256: e14d22e0e8f52a43e719f9ff86c7ad75228166665a5a4e0d13bbe5ba3d93013b
font_01_sfnt_off00006ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB1 12268 bytes
SHA-256: 61974cb135cd0764b8c82760162b2a91df6708a16a41daf9018f4b0b75305452
font_02_sfnt_off00009405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9405 16080 bytes
SHA-256: c0982807324681c2194e80f3f637ca3700f5bf2c32718b44bdc390b4bb628087

Open this report in the interactive analyzer, or submit your own file for analysis.