Malicious PDF — malware analysis report

Static analysis result for SHA-256 3557075550bd03dd…

MALICIOUS

PDF

65.5 KB Created: 2021-02-20 11:55:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3d6dc17a770691d9f02ca51951e563c0 SHA-1: d6cb000e48c1b94c5fa0e0270c2230412d19826b SHA-256: 3557075550bd03dd010665dde3840efdb1443aab58ca6ca6db1866b45bf5d36c
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://baarspo.ru/wix?keyword=super+smash+flash+1+unblocked+funblocked PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411511/normal_602199d48bca3.pdfIn PDF document text
    • http://goodshopsales.xyz/264272555044t22j.pdfIn PDF document text
    • https://maladekokox.weebly.com/uploads/1/3/4/7/134745457/sosulawokiz_wivoligevumuwil.pdfIn PDF document text
    • http://creditscorehelp.info/to_shoot_an_elephantipj7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420930/normal_5fd89b8a3b033.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453734/normal_5ff5b88660f07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387819/normal_602176a48fb94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403946/normal_5fc62c381b14c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nanedivelewiwi.epizy.com/gorigogurewobus.pdfIn PDF document text
    • http://zasegusof.epizy.com/80251351832.pdfIn PDF document text
    • http://fejolisevew.rf.gd/gallbladder_diet_list.pdfIn PDF document text
    • http://furugavasipif.epizy.com/80005998916.pdfIn PDF document text
    • http://xuwugufufokiti.epizy.com/jameson_legal_salary_guide_2019.pdfIn PDF document text
    • http://wolaniloko.epizy.com/rigilexewu.pdfIn PDF document text
    • http://zixoxajoredipub.epizy.com/elton_john_crocodile_rock_piano_sheet_music.pdfIn PDF document text
    • http://kubumoran.rf.gd/air_conditioner_maintenance_guide.pdfIn PDF document text
    • http://dewelimu.epizy.com/abeo_pure_performance_socks.pdfIn PDF document text
    • http://wuxipuretox.rf.gd/11494981735.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_off0000c282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC282 5752 bytes
SHA-256: 964d192d02fb70acf25680d7a7acc787665d578495f4fef4d22c70b218869efe
font_01_sfnt_off0000d5ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5EF 10240 bytes
SHA-256: 1419557c4b063d48b88206c9a3a25cc33a3317ab759b1790d4f0e4334bb8d19e