Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdd5724c1e08c3a2…

MALICIOUS

PDF

75.4 KB Created: 2021-03-28 19:40:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: f65e77c42674d0cba52e14040a97c488 SHA-1: 5625de7f2ddf0c57d19af6aae7a77414be03c660 SHA-256: cdd5724c1e08c3a23e614c8f0e2250b8b0b936328f11e05ec7334bb29f9f69b1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to disposable hosting domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing lure, potentially leading to a second-stage download.

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
  • 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/award?keyword=toyota+motor+corporation+annual+report+2020+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426953/normal_600b70f9edb57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366024/normal_5fdb19a974496.pdfIn PDF document text
    • http://takipibimaxubov.sportsontheweb.net/vegogikavewepevivisurofi.pdfIn PDF document text
    • http://sosujinoriwi.22web.org/bursite_genou_traitement.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379849/normal_6058e38fd3644.pdfIn PDF document text
    • http://lenuvivureropi.scienceontheweb.net/tokepir.pdfIn PDF document text
    • http://basisemakus.iblogger.org/mekibilewutezopugupuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jabodegodonirad.atwebpages.com/xokelowajebuw.pdfIn PDF document text
    • http://vawirir.atwebpages.com/wintrobe_s_clinical_hematology_13th_free_download.pdfIn PDF document text
    • http://wegugoleta.onlinewebshop.net/50095422151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2c11308-fb03-47e0-aa40-f8b8b24d3382/how_to_clean_my_dyson_dc59_filter.pdfIn PDF document text
    • http://tiredosutozol.atwebpages.com/uba_aptitude_test_2020.pdfIn PDF document text
    • http://ragudoduwe.epizy.com/11075849605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b373c352-f49a-4487-b014-8361bd99aca0/navien_ch_240_manual.pdfIn PDF document text
    • http://tavamikilav.myartsonline.com/vodeles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e5ce089-2c90-40b8-a17f-6d7458218d3e/the_masks_we_wear_wow.pdfIn PDF document text
    • http://kanemotix.rf.gd/zijemuniposoru.pdfIn PDF document text
    • http://tufirixanokeno.epizy.com/americold_ipo_prospectus.pdfIn PDF document text
    • http://foropaje.rf.gd/javascript_tutorial_for_programmers_download.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_off0000e766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE766 5448 bytes
SHA-256: 5f1bf6f420d14e293a66f511b2892c5ed09bdcfb1eb73f538859221a556ddd1d
font_01_sfnt_off0000f9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E5 11208 bytes
SHA-256: 03859b54f56c0355bd4a7176b499d8846dbe4eba04ba853ac9aa1dea27e10dc9

Open this report in the interactive analyzer, or submit your own file for analysis.