Malicious PDF — malware analysis report

Static analysis result for SHA-256 83e153cd0336a2fb…

MALICIOUS

PDF

86.4 KB Created: 2021-02-18 04:03:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: af889b561a0a89ed1a51cfa73bd31b44 SHA-1: 1212963312cb21f57f703df060750864943ac687 SHA-256: 83e153cd0336a2fb13f571f8beac9ab7830e4429ee8194aa2a2c886dd116a437
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://yafferge.ru/wix?keyword=pathfinder+character+sheets+online In PDF document text
    • http://lisifakus.66ghz.com/pifarudedolotir.pdfIn PDF document text
    • http://nilofebep.iblogger.org/les_miserables_sheet_music_on_my_own.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421058/normal_600491b97ce2d.pdfIn PDF document text
    • http://bojukekaj.66ghz.com/lawezoximafuwiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475853/normal_5fe7f27db19d3.pdfIn PDF document text
    • http://espaceabone.com/zudevixemadivbkgx6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503279/normal_601064b5d6508.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388163/normal_6029e3b327a8b.pdfIn PDF document text
    • http://firstdoctor.xyz/124057825770zkzq.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
    • https://s3.amazonaws.com/dogevazapiwediw/68156553513.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/diep_khuc_mua_xuan_music_sheet.pdfIn PDF document text
    • http://marivugedada.epizy.com/82034889707.pdfIn PDF document text
    • http://peregal.epizy.com/abox_a2_manual.pdfIn PDF document text
    • http://vapedefomagejev.epizy.com/aaa_life_insurance_beneficiary_designation_form.pdfIn PDF document text
    • http://ziriboxemo.epizy.com/kobolds_and_catacombs_priest_guide.pdfIn PDF document text
    • http://rozipiliwune.epizy.com/kikagevakewudisozorobu.pdfIn PDF document text
    • http://jefevuxivux.epizy.com/adina_sika_free.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_off000109be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109BE 4900 bytes
SHA-256: 66959095f2e9c41eea243c36530998856d0635f7f70c3f5fde7d9881a387123e
font_01_sfnt_off00011a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A47 10444 bytes
SHA-256: 03937ae4e76d76707724869d8d2dffc069e8fc9cd1934541cff5a51b11b84d53
font_02_sfnt_off00013df9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DF9 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34