Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eea47ef80078ec6…

MALICIOUS

PDF

82.5 KB Created: 2021-03-16 23:36:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 630d8513f3b9f6dcee2751c15f2f503a SHA-1: 877da23ebc5a472a5a3bb78bf94ad2f46cd04b56 SHA-256: 9eea47ef80078ec6c5b3d664f01a23ff07163d597c85a3bdb3a9c3c1de61fb89
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a phishing or malware distribution scheme. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates the PDF is part of a link farm designed to obscure the true destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://nipisod.ru/123?utm_term=till+there+was+you+lead+sheet+pdf PDF link annotation
    • http://blablablacar.online/refuderefijutadelisupopemdu60.pdfIn PDF document text
    • http://znakomstva69.space/bluetooth_exe_for_windows_7mglwc.pdfIn PDF document text
    • http://usechambre.xyz/39036248992ut9p2.pdfIn PDF document text
    • http://1gusevshop.space/dead_cells_switch_update_nsppbqmg.pdfIn PDF document text
    • http://you-bestshop.xyz/destination_b1_downloadcn5w4.pdfIn PDF document text
    • https://nezodutulep.weebly.com/uploads/1/3/4/8/134883135/5972e.pdfIn PDF document text
    • http://dfds.in/psicologia_y_religion_carl_gustav_jungpjrx1.pdfIn PDF document text
    • https://wotowabe.weebly.com/uploads/1/3/4/6/134688823/e59b81948cd.pdfIn PDF document text
    • http://wepilulejupikok.22web.org/windows_batch_file_scripting_tutorial.pdfIn PDF document text
    • https://jobadenel.weebly.com/uploads/1/3/1/1/131164033/7912261.pdfIn PDF document text
    • https://tonituligavu.weebly.com/uploads/1/3/4/8/134884188/wemusapixofasadobage.pdfIn PDF document text
    • http://azorocheat6.xyz/19530319767bayhj.pdfIn PDF document text
    • https://vuligezu.weebly.com/uploads/1/3/5/3/135391643/d5f8fc7662d.pdfIn PDF document text
    • http://supsun-aero.com/what_is_the_ode_to_joycnqz8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fumitosavewi.rf.gd/62191214275.pdfIn PDF document text
    • http://xunevonobi.epizy.com/kibekotapuwawopuzezod.pdfIn PDF document text
    • http://buvodadixasiz.epizy.com/bulb_smash_apk_uptodown.pdfIn PDF document text
    • http://xakafof.rf.gd/aquaponics_setup.pdfIn PDF document text
    • http://dokonofuliwuki.rf.gd/applebees_job_application_form.pdfIn PDF document text
    • http://dikekonigexixa.epizy.com/free_bootstrap_templates_store.pdfIn PDF document text
    • http://wonimawepesola.epizy.com/scarlett_3rd_gen_vs_2nd_gen.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF756 5048 bytes
SHA-256: f0cd687db3b76a36ac65e4ffc7e96401821c60816bfbdc064b533145840727e2
font_01_sfnt_off000108a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A0 11020 bytes
SHA-256: 063aa16e49503d20502929fcf48090dbb8b7b7e9763846635e0fc7ab2282f0d5
font_02_sfnt_off00012e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E1B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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