Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe223cb61be4323a…

MALICIOUS

PDF

60.4 KB Created: 2020-10-16 02:11:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e7154b076a70e3439a0af98bcf750d97 SHA-1: e43ac288dc4d238207f929e46a1072195091d13f SHA-256: fe223cb61be4323a46e41aea5936d44daa769d1cd073586c4b035024d734f2c3
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://ggtraff.ru/123?keyword=endless+legend+cultists+guide In PDF document text
    • https://site-1043296.mozfiles.com/files/1043296/titefibekasamej.pdfIn PDF document text
    • https://site-1037882.mozfiles.com/files/1037882/kijokaripusutadakezaf.pdfIn PDF document text
    • https://site-1038925.mozfiles.com/files/1038925/67613330390.pdfIn PDF document text
    • https://site-1042100.mozfiles.com/files/1042100/92803094815.pdfIn PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/tanig.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/5d6f2da.pdfIn PDF document text
    • https://tajurasexir.weebly.com/uploads/1/3/1/6/131606020/1914336.pdfIn PDF document text
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/8f4b4e8d1a.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/fubol-tusutexadagaral.pdfIn PDF document text
    • https://zidabowejixu.weebly.com/uploads/1/3/1/1/131163559/tabogozotutapo-mojijasenubizob-zubalubadufuxe-guwakipovom.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/9653445.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/1109957.pdfIn PDF document text
    • https://site-1048490.mozfiles.com/files/1048490/nemujavubeworuxe.pdfIn PDF document text
    • https://site-1042926.mozfiles.com/files/1042926/92694437195.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/1/0436/7309/2246/files/star_trac_treadmill_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7005/8407/files/ea_sports_cricket_game_for_android_mobile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1404/4827/files/welcome_holy_spirit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3989/9039/files/24986115868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8468/3166/files/12760198134.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_off0000b0d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0D1 4756 bytes
SHA-256: 6dfdf648a51ae8a6bb9cf5d1ea26355c41e35b2ffe2338afd305cd35aa0a6fb9
font_01_sfnt_off0000c114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC114 10340 bytes
SHA-256: 16a6035e0cfd98444e364600cc3f22af29e4816b0b747b2779d17cc3bbc56c59

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