Malicious PDF — malware analysis report

Static analysis result for SHA-256 6858234e0ee1d936…

MALICIOUS

PDF

48.6 KB Created: 2020-10-26 07:02:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: abe80847b560ce9e0880cc1fb72d31d4 SHA-1: 2c1c837d73757c48958ece58e2f8ed03748fc6c2 SHA-256: 6858234e0ee1d936bcb6c2aced9b15b559d6a93e11240fc6d3239763bab9a5be
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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 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.
  • 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://ttraff.club/123?keyword=como+instalar+recovery+en+android+desde+pc In PDF document text
    • https://nogomikosisodop.weebly.com/uploads/1/3/2/6/132681488/koratimasediretotem.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/xakalodotofolapejis.pdfIn PDF document text
    • https://terarawuterojuz.weebly.com/uploads/1/3/0/7/130739827/8141410.pdfIn PDF document text
    • https://rogumine.weebly.com/uploads/1/3/4/4/134448770/8707999.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387424/normal_5f9093007be71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388163/normal_5f94cc50a9769.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_5f8eb4c8892bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f87507b8ea59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375196/normal_5f89e13d78f77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389809/normal_5f90426a3e3ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366660/normal_5f908efdaf6f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370052/normal_5f8b3f2c7c097.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390095/normal_5f9386e90f953.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380854/normal_5f8eb2b0384ba.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/1/0493/6073/2319/files/agua_de_puerto_rico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8073/5648/files/liga_alemana_tabla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9085/4566/files/expresiones_algebraicas_ejercicios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1966/3522/files/class_c_amplifier_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/8995/3436/files/jadwal_update_android_pie_samsung_j7_prime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/8305/1431/files/crested_butte_trail_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/0196/4438/files/24393485196.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF6 5284 bytes
SHA-256: 61bc538d4edbe9b637216a0529d626e7faffd07eaa2da9fb0b9eecb6a3e82ea2
font_01_sfnt_off00008ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDE 11536 bytes
SHA-256: 6127c7bd7aa3c791522a5b9ce172c62a224c2a0a2a07a66ba4ca81b8662946a8

Open this report in the interactive analyzer, or submit your own file for analysis.