Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e0a38662d581ecb…

MALICIOUS

PDF

43.4 KB Created: 2020-10-16 05:31:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d3b575b3ea6896a513b25448292588fd SHA-1: d7a3e63d31789192bc7329ff69df7e911c9825fb SHA-256: 9e0a38662d581ecbebab562ff81eb8e4f479899e778daaa55892c67f20d88cbc
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/pify?keyword=on+back+pressed+android+exit+app In PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/wawajumebalo_zavax_rusub.pdfIn PDF document text
    • https://fisotewefupug.weebly.com/uploads/1/3/1/0/131071176/zupaja.pdfIn PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/wavodowebipuv-kuxalu.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/6497588.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5f87002145fa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369494/normal_5f888ebddb2aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369162/normal_5f88d5a6d705b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370087/normal_5f88bf45b2ba4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f88d1f4b503e.pdfIn PDF document text
    • https://site-1043330.mozfiles.com/files/1043330/bowotuwemititi.pdfIn PDF document text
    • https://site-1039503.mozfiles.com/files/1039503/2101031675.pdfIn PDF document text
    • https://site-1040512.mozfiles.com/files/1040512/lilitasegawetadinugufori.pdfIn PDF document text
    • https://site-1041086.mozfiles.com/files/1041086/46107083275.pdfIn PDF document text
    • https://site-1043404.mozfiles.com/files/1043404/16877093370.pdfIn PDF document text
    • https://site-1042587.mozfiles.com/files/1042587/9019542065.pdfIn PDF document text
    • https://site-1039147.mozfiles.com/files/1039147/tezukup.pdfIn PDF document text
    • https://site-1044440.mozfiles.com/files/1044440/viteritodug.pdfIn PDF document text
    • https://site-1044163.mozfiles.com/files/1044163/android_studio_open_avd_manager_without_project.pdfIn PDF document text
    • https://site-1041483.mozfiles.com/files/1041483/download_fantasy_manager_football_2020_mod_apk.pdfIn PDF document text
    • https://site-1039900.mozfiles.com/files/1039900/wukerawirizurifawi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/7194/6919/files/22369351328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3437/7377/files/magic_bullets_routines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0475/1776/1702/files/faxebetewezipezil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1485/6610/files/50793243000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5017/9993/files/label_the_heart_quizlet.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_off000067cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67CF 5332 bytes
SHA-256: a66c363cd918f7e71d7d3b1423f8cf7f6a438bc69c44c4aa6f272d5dfe2d3b24
font_01_sfnt_off000079f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F2 11172 bytes
SHA-256: 56eab6508a80aa189531e523e8119737c73bc4cc0d715012d8c079687844d635