Malicious PDF — malware analysis report

Static analysis result for SHA-256 da4da544de9a2257…

MALICIOUS

PDF

71.7 KB Created: 2021-03-04 19:42:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cafc23746ff48e0cb99dfe6d47c66008 SHA-1: 3e52d4f54ce37acc9244e58c3040cf8876238eb6 SHA-256: da4da544de9a225701d99d155144db8057bbeb4c57058ef6694715208ab4c654
126 Risk Score

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
  • 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://dugedepap.ru/wix?keyword=how+to+hack+hungry+shark+world+easy PDF link annotation
    • https://bolefusugo.weebly.com/uploads/1/3/4/8/134868203/megereduwa_visukabuf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370309/normal_5ff500aa83dc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373301/normal_603821cd13607.pdfIn PDF document text
    • http://xilenemivagola.mywebcommunity.org/83874679251.pdfIn PDF document text
    • http://xugerovogubex.22web.org/35797965964.pdfIn PDF document text
    • https://tabupuja.weebly.com/uploads/1/3/4/6/134647436/480076.pdfIn PDF document text
    • http://xinuvaro.sportsontheweb.net/how_to_make_steak_in_a_george_foreman_grill.pdfIn PDF document text
    • https://raponomipa.weebly.com/uploads/1/3/2/6/132681826/b45ef1b299215.pdfIn PDF document text
    • https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/vugaxerodi.pdfIn PDF document text
    • https://merejeweja.weebly.com/uploads/1/3/1/3/131381112/3219163.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://zinuforonubas.rf.gd/vimumabanubimanefezat.pdfIn PDF document text
    • http://doruxexim.epizy.com/11217200942.pdfIn PDF document text
    • http://warixogaje.epizy.com/battery_power_saver_app_free.pdfIn PDF document text
    • http://jujobope.atwebpages.com/geospring_water_heater_owners_manual.pdfIn PDF document text
    • http://momobolabewonu.epizy.com/high_anorectal_malformation_radiology.pdfIn PDF document text
    • http://faruvesisok.rf.gd/64883910403.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_off0000cfa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA5 5252 bytes
SHA-256: aedfa4f59d2bb45aa7c9358fd9f53f4aa499e0be66e026498fe5981a692d4791
font_01_sfnt_off0000e187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE187 10320 bytes
SHA-256: a1939992b050b46761d914e71d69c74aea26ce1439d689628db40bb150dea3ac
font_02_sfnt_off000103e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3