Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9b532dda54cc69d…

MALICIOUS

PDF

73.8 KB Created: 2021-02-27 07:50:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8ff45c7fb67397bf5c81ea746b57cd60 SHA-1: d9e1d8415b30804359258924aa8a1f2987f602aa SHA-256: d9b532dda54cc69d028e8bba47115d5b9aa5733d30e2d715d43e412225ca6620
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs pointing to disposable domains, with one URL specifically designed to appear as a search result for property deed restrictions. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

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://midufefew.ru/strik?utm_term=how+do+i+find+deed+restrictions+on+a+property PDF link annotation
    • http://tevutubiwij.getenjoyment.net/pitozuripekasavebelis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379474/normal_602f386d59e07.pdfIn PDF document text
    • http://fisareboveda.getenjoyment.net/the_collector_marvel_wikipedia.pdfIn PDF document text
    • http://losinglotterynumbers.com/7496818455m5ka8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421330/normal_600c82ffce44e.pdfIn PDF document text
    • http://letxxnx.org/85774499949xiolq.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/best_books_to_learn_about_american_politics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497356/normal_6034882e05d73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446776/normal_5ff22d9c93528.pdfIn PDF document text
    • https://cdn.sqhk.co/fasuzozo/ax497KM/rokalekemapobagozafafana.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zilomit.epizy.com/apostolic_gospel_songs.pdfIn PDF document text
    • http://tudulem.rf.gd/arjun_reddy_teaser_bgm.pdfIn PDF document text
    • http://mukenoveran.rf.gd/16946636865.pdfIn PDF document text
    • http://kugefosames.rf.gd/how_do_i_program_my_suddenlink_remote_to_my_vizio_tv.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_off0000e12a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12A 5272 bytes
SHA-256: a921c38dbd893182c3f6856b4d08f51397620b229f3d34b2bd10187a3f22da38
font_01_sfnt_off0000f344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF344 11324 bytes
SHA-256: c99226021b9ae6ec40982f204d68d77ac83a7a255d01ccf777716fa2ac91c337

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