Malicious PDF — malware analysis report

Static analysis result for SHA-256 79206385d3df7d59…

MALICIOUS

PDF

68.9 KB Created: 2021-02-24 12:54:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 319de014c9b269e6a5782d99e94d13af SHA-1: e8f49c640c01ec8f91b39088c45b4c4d3296a97d SHA-256: 79206385d3df7d59bb2a64c02b2242cddab4443316588ea4da726277027fa242
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=orange+roulette+unblocked PDF link annotation
    • https://zonulezewuras.weebly.com/uploads/1/3/4/8/134890742/56072.pdfIn PDF document text
    • https://cdn.sqhk.co/dedejosewor/jcG0CsO/tekeposadexefir.pdfIn PDF document text
    • http://autocredit.moscow/adobe_flash_player_11_archivelbdnf.pdfIn PDF document text
    • http://smeshnoykir.space/520253339603imdk.pdfIn PDF document text
    • http://lunesygets.xyz/famous_chemists_word_search_answer_keyd7d40.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/v8gdFjf/54020207634.pdfIn PDF document text
    • https://dekaraguw.weebly.com/uploads/1/3/4/5/134511216/2627087.pdfIn PDF document text
    • https://sujujawajiz.weebly.com/uploads/1/3/5/9/135964945/pijesu.pdfIn PDF document text
    • https://cdn.sqhk.co/kapokosop/wJ1ujh9/fun_words_that_start_with_a_k.pdfIn PDF document text
    • https://tumotasefon.weebly.com/uploads/1/3/5/3/135317172/fc2071d68ad6409.pdfIn PDF document text
    • https://cdn.sqhk.co/kanedufopuma/icacPNz/disney_byju_s_learning_app_download_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rosomugimo/chePgjg/61445579764.pdfIn PDF document text
    • https://momigetufi.weebly.com/uploads/1/3/4/8/134876151/7322688.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/pegebunov/52597084596.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_off0000d1c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C1 5160 bytes
SHA-256: 58792fd80c98fce1153037f93471834d1afa725e0dbcdbc35d0373f505843087
font_01_sfnt_off0000e359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE359 10520 bytes
SHA-256: 36c775bfcf4fd1ac1b3e91a4da0a644b4a0ea8c99d6c383c5dba3ab1ac53792f