Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5252f2bd0b8168…

MALICIOUS

PDF

70.2 KB Created: 2021-03-12 07:20:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 93e3bdd8e9c4cc4d75a93c5ceccd7844 SHA-1: 238121f2e3167d075088670ebe25ceda413a3dd2 SHA-256: 9d5252f2bd0b8168566df6296a6a352d18fdf80e704da446a5c875e366f39530
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting and forming a link farm, which is a common tactic for phishing or distributing malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful 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://kuzutuzo.ru/wix?keyword=and+the+mountains+echoed+pdf+vk PDF link annotation
    • http://sugameloxufe.mywebcommunity.org/acura_maintenance_code_a13.pdfIn PDF document text
    • https://kovelikazaw.weebly.com/uploads/1/3/4/7/134705675/6214297.pdfIn PDF document text
    • https://cdn.sqhk.co/bonosexov/ccrjbV3/93296959152.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/commerce_sync_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/rapowipijes/hjhbugj/vubukizufipogekisuga.pdfIn PDF document text
    • https://cdn.sqhk.co/vetesomiw/vNJvFid/chaim_bentorah_books.pdfIn PDF document text
    • https://xoxatazafej.weebly.com/uploads/1/3/4/8/134861408/2af8fd76.pdfIn PDF document text
    • http://nitapida.mywebcommunity.org/19705007985.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/disney_annual_pass_benefits.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/hGja3CO/juzalijobasusozeladagoza.pdfIn PDF document text
    • https://tofoboloronu.weebly.com/uploads/1/3/1/6/131636632/xinukajofag_girum_rixasipaxubi_wipepikiniru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zezajezo.epizy.com/persona_5_last_test_answers.pdfIn PDF document text
    • http://zajemoj.epizy.com/47965068471.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/vb_ado.net_tutorial.pdfIn PDF document text
    • http://fabedidatifi.onlinewebshop.net/tuvuvixip.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/50753896842.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/17628916363.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/43116015421.pdfIn PDF document text
    • http://nasutewu.epizy.com/cheddars_nutrition_guide.pdfIn PDF document text
    • http://vilatelisoto.onlinewebshop.net/tozaliga.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_off0000d584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD584 5380 bytes
SHA-256: 2ab19a54f94661b0f02c8b958438be14bd490233cd88ab25b525253dca2fcb47
font_01_sfnt_off0000e7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B7 10324 bytes
SHA-256: 36abb746899e2a2eedb1023d3553e2a484503759fc641588fe011ebee47847b0

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