Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc2d7be5fcc0a8cc…

MALICIOUS

PDF

91.0 KB Created: 2021-03-14 09:48:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b9a01c432c6c2452147bb8baffdde504 SHA-1: d4f8d6c376b453d9fe42e0d897840ed76b2cc7b4 SHA-256: dc2d7be5fcc0a8cccc35601c4744fe855fd1e1ed9d9a75b7493bc51ddc25ebc9
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to disposable domains, suggesting a link farm used for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a user manual, likely to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://soxebez.ru/wix?keyword=lg+tribute+empire+user+manual PDF link annotation
    • https://cdn.sqhk.co/vajirasavuz/chbjaDo/jixolani.pdfIn PDF document text
    • https://cdn.sqhk.co/kulukopupiw/VjaoFhd/zenubuniririgafofasanapi.pdfIn PDF document text
    • https://cdn.sqhk.co/bolomadu/gfgAi7G/14871079448.pdfIn PDF document text
    • https://tafifomoku.weebly.com/uploads/1/3/1/8/131856516/c498a774817909.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382639/normal_60134d701018d.pdfIn PDF document text
    • https://ganepivojo.weebly.com/uploads/1/3/4/7/134774155/mefilabisego-dimubad-bokukajasavomi-dapuvemodoxu.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/jeyJIm0/argentina_football_club_players.pdfIn PDF document text
    • https://visofebofoxofub.weebly.com/uploads/1/3/0/8/130814652/5114848.pdfIn PDF document text
    • https://vavaxomutiposev.weebly.com/uploads/1/3/0/7/130738712/bawefujaxizawemuta.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/ighh0ji/auto_racing_gear_store.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451049/normal_603c23ad7d60e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463810/normal_5fdd789b3702a.pdfIn PDF document text
    • https://nuzaguwimera.weebly.com/uploads/1/3/4/4/134492670/wejon_xaboxifewexu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sowinoto.epizy.com/34984952115.pdfIn PDF document text
    • https://26c1613e-5d28-4fa3-89cb-3d2c9ab59faf.filesusr.com/ugd/fe83c3_eecf89fe1d054bb9a6f0d00ffc3a2b25.pdf?index=trueIn PDF document text
    • http://rubuvajaroxe.epizy.com/58344169226.pdfIn PDF document text
    • https://8a3b53b1-4b9a-43fa-8d11-acca05b1aa90.filesusr.com/ugd/7ad284_c880afd484984a41ba6400c9d6064f90.pdf?index=trueIn PDF document text
    • https://34e223d5-b18a-4f89-96b3-7c58aa965d90.filesusr.com/ugd/440e29_a20a9cb8f9fe46bfaab239be7c4c5d1f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e082e3ee-8df6-4190-bd78-3a8fcaa61a64/jump_on_it_my_pony_magic_mike.pdfIn PDF document text
    • http://dipumekamerara.rf.gd/reloading_log_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25195032-4e21-4bf9-9d0b-628b9ed9510e/84274573571.pdfIn PDF document text
    • https://1df32be7-5e6a-491e-80e4-5c558052ef26.filesusr.com/ugd/e02e08_d055134d8dd04d03b515c15cbbe01934.pdf?index=trueIn PDF document text
    • https://5f8b0e40-2141-4341-98ab-6145db4b8156.filesusr.com/ugd/2072cd_87a78bd3d7e14dfaa3a5f8ed33ed47e7.pdf?index=trueIn 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_off0001275c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1275C 5220 bytes
SHA-256: 137b54e1236dc9cc83663c88553b418960b57409eabaaed8aa8cd67811ebc0bf
font_01_sfnt_off00013907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13907 10944 bytes
SHA-256: fd456b78441161e175303247d925b53d3033dad016ea2a7bbb250f5d62c2e5ce