Malicious PDF — malware analysis report

Static analysis result for SHA-256 da7ced70291afb09…

MALICIOUS

PDF

76.3 KB Created: 2021-05-06 23:19:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: bfc11671754190a6b6692406a1c2dba0 SHA-1: 0cb82adf2f491b0233c411dee8592d45da006a30 SHA-256: da7ced70291afb09e1221fc225275fa894891ba7ef5d29143079a6e11da84510
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which point to disposable domains and are likely part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate maliciousness, with the primary function appearing to be directing users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/strik?utm_term=logitech+h600+vs+logitech+h800 PDF link annotation
    • http://qlemelest.online/kindle_4_reset_button_location0emvi.pdfIn PDF document text
    • http://katermore.ru/atsg_automatic_transmission_repair_mrywte.pdfIn PDF document text
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/79772888c1b.pdfIn PDF document text
    • https://vitovoraf.weebly.com/uploads/1/3/1/1/131164311/2bf06d12ec89.pdfIn PDF document text
    • https://vamububok.weebly.com/uploads/1/3/5/3/135317225/2086663.pdfIn PDF document text
    • https://tenogamux.weebly.com/uploads/1/3/2/6/132681545/lifumuzok.pdfIn PDF document text
    • http://zokazurimila.mygamesonline.org/4171658738.pdfIn PDF document text
    • https://dotimozenut.weebly.com/uploads/1/3/5/4/135400211/wexorun.pdfIn PDF document text
    • http://geekcods.com/online_javascript_editor_formatterw352o.pdfIn PDF document text
    • http://pegujanixur.22web.org/surah_an_naba_ayat_1_40.pdfIn PDF document text
    • https://lixijuzi.weebly.com/uploads/1/3/4/6/134626773/a4d2c83700de2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f395d2f2-f939-483b-815f-81062d4747ff.filesusr.com/ugd/be2697_cedb571136fc4c7aab0b3d37dc87a989.pdf?index=trueIn PDF document text
    • http://zuvemodu.rf.gd/hp_officejet_pro_x476dw_mfp_printhead_replacement.pdfIn PDF document text
    • https://5d3a3edc-1384-4eb0-a354-174dd54c13aa.filesusr.com/ugd/7f5dc5_991b52d8bb0045c0a5a2eb0ea9273d7a.pdf?index=trueIn PDF document text
    • http://jurizamumi.myartsonline.com/bsnl_tariff_plans_up_east.pdfIn PDF document text
    • http://tasagut.rf.gd/subodoxe.pdfIn PDF document text
    • http://keguwaburafokul.epizy.com/kedeniw.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_off0000edf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF8 5244 bytes
SHA-256: e704782187a67b69b33d6c4a34964ad21726e914c6e21febe15d4646c8bfcadf
font_01_sfnt_off0000ffe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE5 10600 bytes
SHA-256: ac29d3a6e90198c1b1e1bf62d2597c44a731a61576cef2bb75cbc602180e8cc9

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