Malicious PDF — malware analysis report

Static analysis result for SHA-256 240f4b0fe7000acb…

MALICIOUS

PDF

79.7 KB Created: 2021-03-27 17:10:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 77ec8b5520791a9801bddcbcfd299917 SHA-1: cd71aceea39e05b278b400ce3c17546e5437c368 SHA-256: 240f4b0fe7000acb923b94d550ede20db73647eba51878f26d30bec4cc18dfec
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, with one specifically mentioning 'barclays ppi form pdf', suggesting a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing attack designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://vilenefex.ru/123?utm_term=barclays+ppi+form+pdf PDF link annotation
    • http://medazuxa.mywebcommunity.org/xiginagebepivulufisesile.pdfIn PDF document text
    • https://cdn.sqhk.co/kanedufopuma/fgfihtq/12307535767.pdfIn PDF document text
    • http://juzupujexeta.22web.org/motorola_xt830c_factory_reset.pdfIn PDF document text
    • http://susekilimu.medianewsonline.com/20645949471.pdfIn PDF document text
    • http://bafiselavanebep.mywebcommunity.org/lojemebezozaja.pdfIn PDF document text
    • http://paxejunon.mygamesonline.org/vevixemo.pdfIn PDF document text
    • http://wukosemat.22web.org/twinkle_twinkle_little_star_ukulele_tab.pdfIn PDF document text
    • http://wutanumijejol.sportsontheweb.net/88927351526.pdfIn PDF document text
    • https://cdn.sqhk.co/lufelumad/q4Mje5B/98396405877.pdfIn PDF document text
    • http://zezarujewida.iblogger.org/47986117693.pdfIn PDF document text
    • http://novofikupeneda.mywebcommunity.org/funonaxovam.pdfIn PDF document text
    • https://cdn.sqhk.co/xesoralo/gjSBQlm/gedufugekukojej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://keberefan.rf.gd/fopejozekinat.pdfIn PDF document text
    • http://kufekisawisewo.onlinewebshop.net/jurnal_metabolisme_vitamin_d.pdfIn PDF document text
    • http://sodexodape.rf.gd/bekuladisu.pdfIn PDF document text
    • http://pepagipil.epizy.com/2003_acura_tl_auto_to_manual_swap.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_off0000fa19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA19 5452 bytes
SHA-256: 960a3c3f8105ece9a49ad8f07032f3a5608e092c7504741cca4f8c543f4dc203
font_01_sfnt_off00010c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C97 11004 bytes
SHA-256: 3c1038ea263c82c02b8766e1f61dcdca9db6ad44b9f4d2d8e49226b1fb011d36

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