Malicious PDF — malware analysis report

Static analysis result for SHA-256 68f0032be1cfeae2…

MALICIOUS

PDF

65.9 KB Created: 2021-03-01 16:18:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: be20390a299667b9053143ee40b0b3de SHA-1: 592878bfb6fb49744eb639acee3c315c4a651797 SHA-256: 68f0032be1cfeae28c6fae32d153a7c24571ac5f808f92ead9f2b00fb5408abc
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/wix?keyword=dewalt+dc970+specs In PDF document text
    • https://rawesare.weebly.com/uploads/1/3/3/9/133997405/6131748.pdfIn PDF document text
    • http://walletelectrum.buzz/vuzegosapu50j5.pdfIn PDF document text
    • https://cdn.sqhk.co/palezubifo/ibZmA64/wakopivu.pdfIn PDF document text
    • http://fimewot.xyz/kumpulan_soal_biologi_smae143m.pdfIn PDF document text
    • http://geleostone.online/easy_thai_red_prawn_curry_recipemlzxh.pdfIn PDF document text
    • https://nufapapezo.weebly.com/uploads/1/3/0/9/130969462/gunowaj.pdfIn PDF document text
    • https://kuvezuwuziteb.weebly.com/uploads/1/3/4/3/134388010/6232447.pdfIn PDF document text
    • http://rozewevojalel.sportsontheweb.net/falinupululuxabevu.pdfIn PDF document text
    • http://importants.space/woods_timer_instructions_tn300jvjsx.pdfIn PDF document text
    • http://lightsex.ru/what_is_a_review_of_related_literature_and_its_importance_in_a_studykqg9q.pdfIn PDF document text
    • https://cdn.sqhk.co/dosakupu/SjjQF0U/xfinity_stream_beta_roku_code.pdfIn PDF document text
    • https://bovuxugiz.weebly.com/uploads/1/3/4/9/134901291/tafalaxofi.pdfIn PDF document text
    • http://ridunculus.com/seth_godin_tribesbp0c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c5eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5EB 5440 bytes
SHA-256: aabbbce9842bcb8a781047bf474bc067b14d71feff446b8affce3a3840a50079
font_01_sfnt_off0000d89d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD89D 10120 bytes
SHA-256: 7c45e5f0922d2f1d81be153a5c0a857492e7b72f98dab56e231bf9f5d7dd5a62