Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d6876f9ac391ae…

MALICIOUS

PDF

45.1 KB Created: 2020-11-08 13:23:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 60cf005b515cfa4288d4e61e1021cc6f SHA-1: f5eba78efc585fb15931dca5d05d651f36582f01 SHA-256: 15d6876f9ac391ae6e35ca440999591dd4e63870388c34c51ccce2f987fca3c1
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://traffking.ru/aws?keyword=granblue+fantasy+casino+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f964b2ed7819.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418747/normal_5f97c8f5b212b.pdfIn PDF document text
    • https://pebawatiwokup.weebly.com/uploads/1/3/4/5/134576243/keguru.pdfIn PDF document text
    • https://xijanejomasug.weebly.com/uploads/1/3/4/5/134506458/vaxelotujaw.pdfIn PDF document text
    • https://nulumekut.weebly.com/uploads/1/3/4/3/134373747/dunip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://rezexisikup.files.wordpress.com/2020/11/metodologia_5s.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/love_and_life_billings_method.pdfIn PDF document text
    • https://vusesalo.files.wordpress.com/2020/11/v2_pro_series_7_replacement_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a74c713f-bd50-469b-b142-e46da8e14d2b/vifaxugovuxevojibali.pdfIn PDF document text
    • https://gezovuxa.files.wordpress.com/2020/11/xexupixurefiwosonubazima.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/xuwagavodixederodi.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_off0000649e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649E 3036 bytes
SHA-256: 6667b7a3c9e4958f05edc1e8b63421f001747e6d72116f2072844bf4592ef406
font_01_sfnt_off00006f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6D 5464 bytes
SHA-256: 4cafc816813ba28d3ab0ff5c5e1ba641716e7179e582e9f6263f4b2e6b99089f
font_02_sfnt_off00008217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8217 11092 bytes
SHA-256: e56568a303f3676325b46342846f8953b92013911eb2c8bea1c69c6b8aa3de58