Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4ceb127073d072c…

MALICIOUS

PDF

83.4 KB Created: 2021-01-23 13:44:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: cdde583c269fe5c654ba6391a93421f0 SHA-1: e1fa93eb7e6e3f24e4dd213e2dcfd7a47ea592c8 SHA-256: b4ceb127073d072c55fde4dad3dbdf415efd381f44c1bf53565869b1410c4704
184 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The file's structure suggests it functions as a link farm designed to direct users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wb?keyword=%D1%84%D0%B8%D0%BB%D1%8C%D0%BC%D1%8B%20%D0%BF%D1%80%D0%BE%20%D0%B0%D1%84%D0%B3%D0%B0%D0%BD%D1%81%D0%BA%D1%83%D1%8E%20%D0%B2%D0%BE%D0%B9%D0%BD%D1%83%20%D1%81%D0%BC%D0%BE%D1%82%D1%80%D0%B5%D1%82%D1%8C%20%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD%20%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE In PDF document text
    • https://detifurotuso.weebly.com/uploads/1/3/5/3/135321595/1501418.pdfIn PDF document text
    • https://site-1173433.mozfiles.com/files/1173433/madufuxitasezutox.pdfIn PDF document text
    • https://site-1177630.mozfiles.com/files/1177630/inventory_summary_report_template.pdfIn PDF document text
    • https://gipasutojemozup.weebly.com/uploads/1/3/1/3/131379868/1158005.pdfIn PDF document text
    • https://site-1249929.mozfiles.com/files/1249929/banting_diet_plan_free.pdfIn PDF document text
    • https://tinozuxitijerel.weebly.com/uploads/1/3/4/5/134528375/4401782.pdfIn PDF document text
    • https://linabodaku.weebly.com/uploads/1/3/1/1/131164293/virabefonozof.pdfIn PDF document text
    • https://site-1204767.mozfiles.com/files/1204767/2416528221.pdfIn PDF document text
    • https://cdn.sqhk.co/vefutifeves/0IgjPk3/22005600208.pdfIn PDF document text
    • https://site-1195801.mozfiles.com/files/1195801/digital_marketing_specialist_jobs_near_me.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vonizevugopu.rf.gd/norton_power_eraser_free.pdfIn PDF document text
    • http://nerokezixuzat.epizy.com/best_small_food_processor_consumer_reports.pdfIn PDF document text
    • http://bojefej.epizy.com/241523744.pdfIn PDF document text
    • http://zanebinelit.rf.gd/bejamepukegirudiwazave.pdfIn PDF document text
    • http://kobizesamow.rf.gd/best_comptia_it_fundamentals_study_guide.pdfIn PDF document text
    • http://molugafew.epizy.com/rebofabilofi.pdfIn PDF document text
    • http://vejesigivilowen.rf.gd/android_adb_install_specific_device.pdfIn PDF document text
    • http://zasegusof.epizy.com/devi_chitralekha_ji_ki_bhagwat_katha.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_off0000f7e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E5 6536 bytes
SHA-256: 66f0d4fbf75bb64d46f5bf1cdad6567cf09f7a97e2bd1d5599bc6a32d0761760
font_01_sfnt_off00010d63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D63 15160 bytes
SHA-256: 933c224fd17dce977d16476ffbdc308053deb71d5066a82275e89c43c0622e7f

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