Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6d401a0a5e43df…

MALICIOUS

PDF

84.7 KB Created: 2021-03-20 17:11:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 4694bc398bc7ae169dc9db9a716baf53 SHA-1: e90c211e13688468a973fe33e96f78e4ba247d20 SHA-256: 2b6d401a0a5e43df023a33d9754521bf48fafb575bd39fdbb7bc8f8b6f16df88
126 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It functions as a link farm, directing users to numerous external URLs, one of which is associated with a phishing lure. The presence of embedded URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://maypoin.ru/wix?keyword=star+wars+saga+edition+races PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453888/normal_5fd3387196200.pdfIn PDF document text
    • http://pakawuwujawo.getenjoyment.net/how_to_clean_filter_on_dyson_animal_ball.pdfIn PDF document text
    • https://winenexosipagep.weebly.com/uploads/1/3/2/8/132814343/2314011.pdfIn PDF document text
    • https://sarogixi.weebly.com/uploads/1/3/0/8/130813770/tanoxiritadoxapi.pdfIn PDF document text
    • http://gexomafe.mypressonline.com/ninaka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478378/normal_60146c2578750.pdfIn PDF document text
    • http://fegalaro.iblogger.org/neumonia_harrison.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443337/normal_5fd1f2827d80e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470833/normal_5fe053c6bd8a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474470/normal_602af741506bf.pdfIn PDF document text
    • https://tatelemu.weebly.com/uploads/1/3/1/1/131164239/xopelogafoji-kofomopetijatox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494874/normal_6050592fe616c.pdfIn PDF document text
    • http://nujagexurej.medianewsonline.com/tewufoju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://tezowojisare.epizy.com/86455231465.pdfIn PDF document text
    • http://lowebabufi.rf.gd/kagamawabasefavizigebu.pdfIn PDF document text
    • http://solezod.myartsonline.com/80072675790.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/cakephp_3_phone_number_format.pdfIn PDF document text
    • http://solugivewatewa.myartsonline.com/clases_de_sistemas_operativos_para_moviles.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/latest_movies_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/sesozewuserojisiga.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/area_and_volume_of_similar_figures.pdfIn PDF document text
    • http://jedekikubo.epizy.com/trevor_hastie_introduction_to_statistical_learning.pdfIn PDF document text
    • http://fujafinu.epizy.com/26615762752.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fefc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFC 5056 bytes
SHA-256: 73058f5621dce51aba9d39438fc8069f7620b4ebc8a4c120ac49e7531acb2dcc
font_01_sfnt_off0001103c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1103C 11080 bytes
SHA-256: 7abf80ea4f16397b3342d503a23f401d6baaa8dc347e217d5442cd0e6f420f09
font_02_sfnt_off000135c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135C6 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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