Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae13e5b7360f8a15…

MALICIOUS

PDF

51.7 KB Created: 2020-10-02 01:52:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: ddb85ffa0ea7f758bab0d921f94e9851 SHA-1: 166889cf4c4f05f619bcefd33da5a13df7ecfc83 SHA-256: ae13e5b7360f8a1522a0fdb9ed915b36e845af68e58aed78c8bc558f07693290
124 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.
  • 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.
  • 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/strik?keyword=efectos+de+las+auxinas+pdf In PDF document text
    • http://files.soloforsenate.com/uploads/1/3/0/7/130739202/vedapasufoj_resugabof.pdfIn PDF document text
    • http://laxek.ludloweboyssoccer.com/uploads/1/3/0/8/130814328/3872932.pdfIn PDF document text
    • http://files.alicepark.com/uploads/1/3/1/4/131437333/9018579.pdfIn PDF document text
    • https://site-1039811.mozfiles.com/files/1039811/puzofizeridujufiganen.pdfIn PDF document text
    • https://site-1037115.mozfiles.com/files/1037115/73228949793.pdfIn PDF document text
    • https://site-1036644.mozfiles.com/files/1036644/63016862638.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/6bf82523-518c-42c8-8b0f-dce208668ef3/79778842825.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe28084d-351c-4f76-a412-c859378a8cf0/63013599694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29da5db2-4bd5-4455-a20a-53c4ec392da3/jixekidelifasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd4f440c-8289-4af7-b0fa-c004f4a4d794/xajazuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/0434/2694/files/xusozotune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/form_ssp_pajak_terbaru_excel.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_off00008c53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C53 5080 bytes
SHA-256: 9c3492b9b84272afdc1a0feae752dc5002719b699884814c5552330eb7daeb02
font_01_sfnt_off00009dc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DC1 10644 bytes
SHA-256: e814c1541626da7534018f408c31ae29040a2ad3ac2ed58050cdd6934974d1d0