Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd4ae8ff22b66669…

MALICIOUS

PDF

71.3 KB Created: 2021-02-27 05:55:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8a85edfab14c0fd7cfb31ffbe7a0cec4 SHA-1: 6e2fdd6dd3b545006d8e4cc97636169932da5d9a SHA-256: dd4ae8ff22b66669ba75feb705551f7a0f93baad3ece65c8e39234fef10fe7f7
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://dugedepap.ru/wix?keyword=living+solutions+wireless+indoor+single+outlet+lighting+remote+control+manual PDF link annotation
    • http://fituxem.sportsontheweb.net/dlink_dns-321_default_password.pdfIn PDF document text
    • https://nivosuvadifo.weebly.com/uploads/1/3/5/3/135384950/5474125.pdfIn PDF document text
    • http://zodatowafe.getenjoyment.net/why_do_companies_sell_receivables.pdfIn PDF document text
    • https://cdn.sqhk.co/joxesinejag/Yjasbgc/fibixawagi.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/hcwVTt0/32685132854.pdfIn PDF document text
    • https://kurakozizuvev.weebly.com/uploads/1/3/2/6/132681999/jokexodox.pdfIn PDF document text
    • http://sadinexiwa.mygamesonline.org/can_samsung_note_2_be_upgraded_to_lollipop.pdfIn PDF document text
    • http://golixudib.mypressonline.com/8845867908.pdfIn PDF document text
    • https://wilaruxade.weebly.com/uploads/1/3/4/8/134865150/nawapo.pdfIn PDF document text
    • http://ziwusis.getenjoyment.net/como_es_un_liderazgo_transaccional.pdfIn PDF document text
    • http://kazexajisodibu.medianewsonline.com/how_to_attach_blade_to_corona_tree_pruner.pdfIn PDF document text
    • https://cdn.sqhk.co/luwokiseg/hjajhha/samsung_cloud_gallery_app.pdfIn PDF document text
    • https://vabeluzaxudi.weebly.com/uploads/1/3/4/8/134884936/29220.pdfIn PDF document text
    • https://cdn.sqhk.co/zogowefu/gfghuhb/62029813490.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pozidijapepore.atwebpages.com/double_bar_graph_worksheets_4th_grade.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_off0000d6df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DF 5444 bytes
SHA-256: a279a4adebbb8af5fda52c7c6765bc3b488f63c378d96924165975d70e5ac032
font_01_sfnt_off0000e953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE953 10528 bytes
SHA-256: 27a0c0d246655357c675bbf8ed87daaaf0bafc7b21cfaa7a3fe7ecb24bff2d40