Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b52b5520d11e96d…

MALICIOUS

PDF

78.3 KB Created: 2021-02-25 00:47:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: df75b4f5f1a4290d7633331601362854 SHA-1: 500d8961b0228c4d7e9208e21bdcd5d634f5cd95 SHA-256: 6b52b5520d11e96d36040cf56d0f1352e21aa4ddcd75161f1dc56eb109b2bc0c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/aws?utm_term=midnight+sun+brewing+company+anchorage+alaska In PDF document text
    • http://pixunune.sportsontheweb.net/xuwironirijonavat.pdfIn PDF document text
    • http://zevewidojodot.mywebcommunity.org/girard_tankless_water_heater_problems.pdfIn PDF document text
    • http://lojasamericanasbr.com/lujemafuwiuqjv.pdfIn PDF document text
    • https://cdn.sqhk.co/vasinabew/hih90jj/101_espn_fast_lane_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/njdhaOP/dragon_city_menu_fulton_ny.pdfIn PDF document text
    • https://cdn.sqhk.co/gotirawuz/1gi7jcR/89964010378.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403822/normal_602da91595faa.pdfIn PDF document text
    • http://tranquils.space/kenmore_dishwasher_ultra_wash_quiet_guard_4_resetewmkq.pdfIn PDF document text
    • https://nagiliju.weebly.com/uploads/1/3/1/4/131412426/xegiretemagivot.pdfIn PDF document text
    • http://hayatevesigar.online/wedding_dresses_stores_near_meulet3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408343/normal_5fc67cca3e9d1.pdfIn PDF document text
    • http://rewita.fun/cobra_29_plus_manualpc3rv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368504/normal_5fc91d0f654d5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zubiluwetij.myartsonline.com/89548353986.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/2784434126.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_off0000f2f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F1 5892 bytes
SHA-256: 9a043bf909635a35ec5f0a4fbb558c75026a3cc284a0d4c3838a36a3de447a6b
font_01_sfnt_off000106ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106EC 10896 bytes
SHA-256: cbd1e3897bc8ee8b5137bd3d9130c6d74ffe17cab2d210e9c9d4fbfe80261d55