Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd148f7bb91c3dc…

MALICIOUS

PDF

81.5 KB Created: 2021-03-10 06:43:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 2ac245e7a1ae728ef611e419d248ecd0 SHA-1: e9e3007a335db5aae6e29b92d2b5517163ea2fa6 SHA-256: 0fd148f7bb91c3dc4a838d63450a93f82973e602f2f86e8d69f062bf993c9c0a
126 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and heuristics indicate it is a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure, likely leading to a malicious site for further exploitation.

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://xezojetit.ru/strik?utm_term=badger+1+garbage+disposal+repair PDF link annotation
    • http://kursi--kosmetologs.site/pandemic_ebt_virginia_november1pd27.pdfIn PDF document text
    • http://rafale.store/danby_ddw621wdb_energy_star_countertop_dishwashergrfaw.pdfIn PDF document text
    • http://suzaxikuzexaw.66ghz.com/72785152774.pdfIn PDF document text
    • http://ig-soft-team.com/xekevagojezejamilofvxnvn.pdfIn PDF document text
    • http://prodit.space/excel_graphique_axe_secondaires22kc.pdfIn PDF document text
    • http://imedo.ru/edexcel_a_level_further_maths_topich54r0.pdfIn PDF document text
    • http://youralteragoods.com/webadaminalecxkz8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://besipopi.epizy.com/jusita.pdfIn PDF document text
    • http://gaxufaxurawago.epizy.com/27986725799.pdfIn PDF document text
    • https://b3d988c2-7a7d-4c3c-9141-221b6550481e.filesusr.com/ugd/9dda13_cca401b72713450b9cecd8672cd1315b.pdf?index=trueIn PDF document text
    • https://b4f37643-5dcf-4f7e-b18d-33dfadc922ee.filesusr.com/ugd/2d797c_3b2ec8f216134e898f4bfccfc80e8e17.pdf?index=trueIn PDF document text
    • https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_075fd053faa7435bba4cd71ea962a9b4.pdf?index=trueIn PDF document text
    • http://fufibilola.epizy.com/risk_of_rain_2.pdfIn PDF document text
    • http://sipenewodadavuv.rf.gd/samsung_50_inch_4k_uhd_smart_tv_with_hdr.pdfIn PDF document text
    • http://dixolasafu.epizy.com/48092553032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cfc513b-2b50-408c-ba90-1f2c90f50b7d/make_your_own_simple_flowchart.pdfIn PDF document text
    • http://rebagada.rf.gd/kodozedipaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f070527-3307-4b50-b9f5-6ee34d57325c/luvomoxesu.pdfIn PDF document text
    • http://kelopejawutan.rf.gd/nespresso_uganda_strength.pdfIn PDF document text
    • https://84d5b3ab-51dd-4312-87b7-51df18fb3b26.filesusr.com/ugd/9ea9b6_3cc8fa5d388b4fa9a71fc48ed151b5e8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ea108ee-81ee-4606-a662-11388ce1f984/36212015709.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7235de54-ea38-4418-ba15-39fcbbc81381/what_does_climate_of_a_region_mean.pdfIn PDF document text
    • https://61df3396-90b5-4b69-a3ae-475c9da6ebc5.filesusr.com/ugd/516574_3b691d1a1ca7471597117951e152a66b.pdf?index=trueIn 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_off00010161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10161 5368 bytes
SHA-256: 0db2ce9455626daaf61f6e5b7f494fbd4b7cbde54ac21f6e2c4caa562f597b2d
font_01_sfnt_off000113ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113AD 10212 bytes
SHA-256: adff0a4474aa35aadc4249e687287cb3b55447265fc8611d5a9404c1f6207497

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