Malicious PDF — malware analysis report

Static analysis result for SHA-256 d237a1ca76b43c66…

MALICIOUS

PDF

67.5 KB Created: 2021-02-16 13:42:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: af13f6a4667cd90ce550484ab628aa32 SHA-1: 414db207e436919448c8caab87d168ade25fb29d SHA-256: d237a1ca76b43c66c2ce745badce8e10c79bd1b80e12bf4648c2d2f30a5e7953
186 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
  • 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://maypoin.ru/wix?keyword=csr+2+hack+2020+ios PDF link annotation
    • https://nefolebar.weebly.com/uploads/1/3/4/4/134400051/nogep.pdfIn PDF document text
    • https://jamiwimavebu.weebly.com/uploads/1/3/1/4/131453695/4ec9e152911bdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388156/normal_5fd0a00264150.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493549/normal_601da5e96a3f1.pdfIn PDF document text
    • http://magnitoli-2ekran.site/brocade_network_advisor_trial88jof.pdfIn PDF document text
    • https://jasitonil.weebly.com/uploads/1/3/4/0/134096785/3245863.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414491/normal_5fc60aa0e6df1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380082/normal_6028598e8e1f3.pdfIn PDF document text
    • https://zirakamu.weebly.com/uploads/1/3/1/3/131398357/26b991ce9cc460.pdfIn PDF document text
    • https://wabezapodila.weebly.com/uploads/1/3/1/4/131437306/692389.pdfIn PDF document text
    • http://inter-kalinka.ru/the_making_of_star_trek_the_original_series81a0z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386094/normal_600d548c9d73f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://viputedijanoxoz.rf.gd/sleeping_bag_tog_rating_guide.pdfIn PDF document text
    • http://fusifovizit.rf.gd/inventory_management_excel_template.pdfIn PDF document text
    • http://jupejorix.epizy.com/15080254808.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_off0000ce20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE20 5096 bytes
SHA-256: 5fc671984765cfa861a24783be72b2110f0e117d488f51f49131de6879017b39
font_01_sfnt_off0000df64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF64 10036 bytes
SHA-256: d7cb319b0f1767dc7e703f6f538fd9a9b5d5229c62dcc0d79e0aa8572cac80fe