Malicious PDF — malware analysis report

Static analysis result for SHA-256 a84aed7d003af75c…

MALICIOUS

PDF

74.2 KB Created: 2021-03-04 11:12:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e554480857b6bc5a238f6c5cbfae151b SHA-1: dadb012f560417615242256fab550b0cf34df62b SHA-256: a84aed7d003af75c126ba8dc090f69d2f34d11ca28b6e6dfde70b4f813677943
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/award?keyword=jump+force+switch+unlock+characters PDF link annotation
    • https://surutadalonuta.weebly.com/uploads/1/3/1/4/131455158/4220841.pdfIn PDF document text
    • https://dinidoleto.weebly.com/uploads/1/3/0/9/130969871/6714780.pdfIn PDF document text
    • http://povulofi.mywebcommunity.org/tikiwateduwedofobogoluj.pdfIn PDF document text
    • https://cdn.sqhk.co/vapezuwe/jggpWhh/xatumatusaxadizup.pdfIn PDF document text
    • http://zimefob.22web.org/goxara.pdfIn PDF document text
    • https://nugenezeni.weebly.com/uploads/1/3/4/6/134632238/pisexas-palulo.pdfIn PDF document text
    • https://vuwonogi.weebly.com/uploads/1/3/5/3/135300132/turizulojivuxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468540/normal_600ddb51b8d9e.pdfIn PDF document text
    • https://fubexomufepa.weebly.com/uploads/1/3/4/8/134850999/0f188.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://delezomixotu.epizy.com/rodaloki.pdfIn PDF document text
    • http://fuwotatikiluwa.epizy.com/annual_report_template_indesign_free.pdfIn PDF document text
    • http://jawevobafepen.epizy.com/how_to_pray_the_advent_wreath_at_home.pdfIn PDF document text
    • http://gavasirobodi.rf.gd/99285153494.pdfIn PDF document text
    • http://vazuvipib.rf.gd/15445320389.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/polycom_soundstation_2_power_supply_voltage.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_off0000e6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B9 5400 bytes
SHA-256: e409822773f4b30df8a752e13db2b1feddf32361bf97ae011fd9db98469b089b
font_01_sfnt_off0000f8ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FF 10348 bytes
SHA-256: 2512f17012f36f078fab2f17e12293b9f3cf77ef22157eac9fc1d67a8e86847e