Malicious PDF — malware analysis report

Static analysis result for SHA-256 e36d1569d511f8ad…

MALICIOUS

PDF

63.9 KB Created: 2021-02-11 15:29:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 396bbc6364e43680b9f5b89dc7157c1c SHA-1: 5d4403a9db21cae247c9732d0b70f22714cec0b2 SHA-256: e36d1569d511f8ad44e31d818f0d6fe374b62d37269b4c360f4ea35058fe8af0
254 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
  • 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 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=pps+teacher+portal In PDF document text
    • http://ecoterritory.store/rorawifemolodetaziwp1a.pdfIn PDF document text
    • https://pixizibonemitu.weebly.com/uploads/1/3/1/3/131382366/9253381.pdfIn PDF document text
    • https://xinewufovina.weebly.com/uploads/1/3/4/2/134235071/watawovewebow_konup_sasetumas_pokadub.pdfIn PDF document text
    • https://pupiwikupexi.weebly.com/uploads/1/3/4/3/134348736/bb89bb7ec1.pdfIn PDF document text
    • http://natbeach.space/volkswagen_beetle_service_manual2h04l.pdfIn PDF document text
    • https://fiwirozubaxezu.weebly.com/uploads/1/3/4/6/134659856/wakepesip_sezato_jetejabuv.pdfIn PDF document text
    • http://goodnatural.space/gigulupixadozamepilgmj11.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/char_griller_akorn_6520_manualg2zo8.pdfIn PDF document text
    • https://mubuwevuli.weebly.com/uploads/1/3/4/5/134528176/4587574.pdfIn PDF document text
    • http://arendaavto.taxi/66485269841w0lvz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/dufadavawedisaz.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/nuvufenufela.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/shazam_para_pc_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/vegobed.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/business_information_systems_ireland.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/cetoacidosis_diabetica_y_estado_hiperosmolar_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/94779595708.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/ledosakekeko.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/36724902703.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/90944797344.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_off0000bdcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDCD 5020 bytes
SHA-256: 549955c9e035ad70672d6f39416bc0e4567238d857529ea27262bda760b18d95
font_01_sfnt_off0000cedb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEDB 10568 bytes
SHA-256: ef84427ac1f9606af00189e5c028d9ba837db675e2e6c651800390512c6e3196