Malicious PDF — malware analysis report

Static analysis result for SHA-256 b74ee81f451a9a62…

MALICIOUS

PDF

80.2 KB Created: 2021-03-16 03:49:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b5315de6f9c1c92e272c9a5dd58f7e0 SHA-1: 73f2f5547ff9bb7919427329d6db1484c95f8032 SHA-256: b74ee81f451a9a62eed05ac6bf0f2dca6afc3f661f3f02fe2c4ca647ee4f52aa
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, which is a common tactic for phishing or distributing further malware. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/award?keyword=el+capitalismo+es+moral+pdf
    • https://cdn.sqhk.co/xaselavub/NHhfZ8m/72483599611.pdf
    • https://genizeregadivov.weebly.com/uploads/1/3/4/7/134709948/3752844.pdf
    • http://winoxolupuvil.getenjoyment.net/nawonimev.pdf
    • https://tonogedufeji.weebly.com/uploads/1/3/4/3/134378200/vasitilafosamu-zajabikoso.pdf
    • https://cdn.sqhk.co/zizaratijiga/UjihivI/97691319872.pdf
    • https://cdn.sqhk.co/busibelifiv/cXEshjf/29090432269.pdf
    • https://jazitilifa.weebly.com/uploads/1/3/1/4/131414561/vevajufowagir_depojafibebi_zipojikowixib.pdf
    • https://cdn.sqhk.co/guposidum/jJTZgc0/3d_printer_price_in_bd.pdf
    • https://rugomekedakore.weebly.com/uploads/1/3/5/3/135302214/d3b09d6cce5784e.pdf
    • https://jetosopotow.weebly.com/uploads/1/3/4/0/134018613/telowozuvawesi_porikuvo_gedumi.pdf
    • http://jobs-ingenieur.best/52821307157xbcei.pdf
    • https://static.s123-cdn-static.com/uploads/4500904/normal_5ff8da53d414e.pdf
    • https://cdn.sqhk.co/totafeta/dk9jdhf/woodcut_art_style.pdf
    • http://jasazotinalol.mygamesonline.org/sudoxerizobakerijon.pdf
    • https://sezowizubuv.weebly.com/uploads/1/3/0/8/130874308/1de67bffba.pdf
    • http://limecash.xyz/kwikset_smartcode_909_user_manual68631.pdf
    • http://taforojujutusig.mygamesonline.org/formula_para_convertir_de_pulgadas_a_cm.pdf
    • https://cdn-cms.f-static.net/uploads/4373281/normal_604d1a493c96e.pdf
    • https://nopumalazaf.weebly.com/uploads/1/3/0/8/130813483/surenexinag_lobokilufamij_razezevitok_xumaruveronet.pdf
    • https://pedesidava.weebly.com/uploads/1/3/4/3/134355179/velexixalosenix.pdf
    • https://static.s123-cdn-static.com/uploads/4407664/normal_5fe5455725649.pdf
    • http://tehnotop.store/22119454178po0ex.pdf
    • https://gewukojinita.weebly.com/uploads/1/3/2/7/132712116/52d12c4e2280c6.pdf
    • https://cdn-cms.f-static.net/uploads/4369777/normal_604fe0f38b089.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://wuwedilejom.myartsonline.com/falanofobe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9d9.bin
bfb476464dfc1d010f955e51a666199fb27c721e8bc0462b3d893970d9b8f844		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D9 4940 bytes
font_01_sfnt_off0000fa9a.bin
c46622777f3fd46fc61e7a94daf2de4959453c2b08240a3877e42bab7c0dc0ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA9A 12476 bytes
font_02_sfnt_off0001234b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1234B 4324 bytes

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