Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b308a5cc53b0589…

MALICIOUS

PDF

78.8 KB Created: 2021-03-04 00:44:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: aee64bd9748040d94f1a5447a1a1e0b3 SHA-1: 987df660e6989901d4e952ac24a61581b1e2bed8 SHA-256: 2b308a5cc53b0589836f318c35bbb00731322e1045d0594aec82e1f0565f04d7
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 domains, and is flagged by heuristics as a link farm and potentially malicious. 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 URIs suggest it's designed to redirect users to external, potentially harmful, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://resalured.ru/wb?keyword=why%20do%20parents%20use%20emotional%20blackmail PDF link annotation
    • http://mitutepoka.medianewsonline.com/what_were_the_first_second_and_third_estates.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460247/normal_600922a534dfe.pdfIn PDF document text
    • http://zibepifutidi.sportsontheweb.net/momentum_masters_book_review.pdfIn PDF document text
    • http://dojemop.mywebcommunity.org/kasawutonalo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387410/normal_603018dc07520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401559/normal_602ea7dc9eed2.pdfIn PDF document text
    • http://lumufurisazela.mywebcommunity.org/29912221704.pdfIn PDF document text
    • http://mattelipsticks.site/ion_cation_y_anionuntt8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476418/normal_6020357c4b8bb.pdfIn PDF document text
    • http://kernig.pro/smart_manager_android_samsunglnslk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453102/normal_600fdb626a35b.pdfIn PDF document text
    • http://wewogokuwidu.mywebcommunity.org/how_to_activate_gta_4_manually.pdfIn PDF document text
    • http://googsnat.space/686077773261zd51.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369143/normal_5fe24514a4af4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488837/normal_602f88076cd5a.pdfIn PDF document text
    • http://coins24h.com/how_to_type_cubed_in_google_docsadicc.pdfIn PDF document text
    • http://misujupino.getenjoyment.net/fujifilm_finepix_s1_pro_review.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://faligesiba.rf.gd/direct_and_indirect_reported_speech_lesson_plan.pdfIn PDF document text
    • http://kigagositen.epizy.com/rafiletadopalodudizotu.pdfIn PDF document text
    • http://gototura.myartsonline.com/a_link_to_the_past_items_list.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/the_heir_kiera_cass_wikipedia.pdfIn PDF document text
    • http://nemojasa.epizy.com/komikufagubawezurukad.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/28418614691.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_off0000f6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B6 5632 bytes
SHA-256: ce266de8a497a132c65ee497acb3302b96aab12f33516bdc2a1c081b3674d047
font_01_sfnt_off000109be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109BE 10568 bytes
SHA-256: c53283b5708641002752614c8c6924daf8c691940b1c1bc3aefa3cee01558ffa

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