Malicious PDF — malware analysis report

Static analysis result for SHA-256 717b2953a5b539d9…

MALICIOUS

PDF

70.8 KB Created: 2021-02-21 08:22:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7dc3aa6f75071eb75417c735304c760a SHA-1: f0cf5eaa835d11e38c7b92f423d5cc1168a5b191 SHA-256: 717b2953a5b539d9677b783f27c73ac2caa4e54f91c4e39f68586c17e63784a8
186 Risk Score

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://druttle.ru/wb?keyword=online%20astrology%20birth%20chart%20analysis PDF link annotation
    • https://cdn.sqhk.co/mejofiwog/rgd7jeO/80045334562.pdfIn PDF document text
    • https://vejexuwelukilik.weebly.com/uploads/1/3/5/3/135340180/9475513.pdfIn PDF document text
    • http://rugavup.iblogger.org/99374651510.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404980/normal_6016fc6632a70.pdfIn PDF document text
    • https://cdn.sqhk.co/nowavutu/FiiQA9x/canna_lily_seed_pods.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452837/normal_5fd9ad4a35e76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425908/normal_6029a9938f399.pdfIn PDF document text
    • https://suxekupawuva.weebly.com/uploads/1/3/2/7/132710704/noxeranujoserelofoba.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/e6TIzVa/53774206693.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/ififJUG/jigidolufejezon.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/jfhf6oG/11744494093.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xinudigiwuwa.epizy.com/48528906019.pdfIn PDF document text
    • http://turufefi.rf.gd/top_100_charts_germany_2019.pdfIn PDF document text
    • http://lokutoge.rf.gd/inject_annotation_in_android.pdfIn PDF document text
    • http://nuwumexuxesi.epizy.com/nuzatiretadi.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_off0000d839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD839 5328 bytes
SHA-256: 380492a34a6893eaf661fd6e3564db2bb25e3956e41e77ccbbc981ab0634a9a8
font_01_sfnt_off0000ea56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA56 10512 bytes
SHA-256: 7587331fda16c277a7cdf8b6c73dabd100b778d24ae3a9f1d1339471a5beef00