Malicious PDF — malware analysis report

Static analysis result for SHA-256 982ee7d5cba5e603…

MALICIOUS

PDF

44.3 KB Created: 2020-11-06 21:05:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: dc3be8ea4c1c49406bce3766a7cb1c9b SHA-1: d4ba93d8c4efc4815aadb4f3d7fbc0cdbde53ead SHA-256: 982ee7d5cba5e603ea7dceb29bf8349071ed9d8f914be8b5a6577c4086d7bdfb
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://traffset.ru/aws?keyword=ninja+cat+the+game PDF link annotation
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/fefujewetawasozokadu.pdfIn PDF document text
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/zonifipifene_bofopifebodupar_semafaxoxovesuw_zafudidajol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://silisejez.files.wordpress.com/2020/11/reading_words_per_minute_chart.pdfIn PDF document text
    • https://nizowowe.files.wordpress.com/2020/11/midesifitir.pdfIn PDF document text
    • https://dokilujaze.files.wordpress.com/2020/11/46505601668.pdfIn PDF document text
    • https://dawadin.files.wordpress.com/2020/11/nafuwajixis.pdfIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/merozasopegujibe.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/42089892336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7b706b6-7f2e-4d9c-abd8-847557281b52/52207461840.pdfIn PDF document text
    • https://monirasuwa.files.wordpress.com/2020/11/74901408453.pdfIn PDF document text
    • https://juvibix.files.wordpress.com/2020/11/gabizagamumarokidatanum.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_off00006fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD6 4952 bytes
SHA-256: 35ef9b1946e647ff99595ca8c07365486ec650d27b12ca43d9f964c99c2f84a1
font_01_sfnt_off0000809b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x809B 10492 bytes
SHA-256: 860a81a3049d5a18f9832f970f9369ca1441a73323454c69878288cb66cd8da8