Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e825ff4ebfd0932…

MALICIOUS

PDF

87.6 KB Created: 2021-03-31 09:23:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 088978ec1187c57647b51050f55d220e SHA-1: 68ba1d22e696a8db86076f490173253f685c0ddc SHA-256: 8e825ff4ebfd09323f20a84f6fabc628b96cf93db7c9836ab4d9e8a5e3dfa2fd
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, indicating a phishing or scam campaign. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains keywords related to 'Android based development board' and metadata from wkhtmltopdf, suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://baarspo.ru/strik?utm_term=android+based+development+board PDF link annotation
    • http://medyayazilimtr.com/hit_and_run_trading_cooperp9rq3.pdfIn PDF document text
    • http://vobafoselalulor.mypressonline.com/tevukobapexetabevu.pdfIn PDF document text
    • http://lixorajepidil.mygamesonline.org/94179817763.pdfIn PDF document text
    • http://wacc-cat.org/nexoviuzdno.pdfIn PDF document text
    • https://cdn.sqhk.co/tawavumazo/jzZgfq5/zejimumagajekitifalebag.pdfIn PDF document text
    • https://modibidusez.weebly.com/uploads/1/3/4/0/134096811/ff416828541.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480594/normal_6008f0b0837a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369512/normal_602f39c977c3b.pdfIn PDF document text
    • https://fexegidonowagi.weebly.com/uploads/1/3/5/3/135325594/kipobejilawupu.pdfIn PDF document text
    • http://xunopapazugatar.medianewsonline.com/como_sacar_la_molaridad_de_una_solucion_acuosa.pdfIn PDF document text
    • http://usacreditmonitoring.info/9580556839fxgn2.pdfIn PDF document text
    • https://buzufurabobozu.weebly.com/uploads/1/3/5/3/135304208/suxivo_pabefazibesoz.pdfIn PDF document text
    • https://cdn.sqhk.co/mitajaso/oqjcibH/legends_football_league_2019_juego.pdfIn PDF document text
    • https://cdn.sqhk.co/wodabakope/WPzhhha/26314108834.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490116/normal_602e4e261aad0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410441/normal_601fb040c07f0.pdfIn PDF document text
    • https://tuzisufuga.weebly.com/uploads/1/3/4/4/134458332/giwopekipumuvajesud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379477/normal_6017cf6b5d65d.pdfIn PDF document text
    • https://cdn.sqhk.co/xokipuxat/idUr4ij/86447396672.pdfIn PDF document text
    • http://bumawusuka.mypressonline.com/sri_rudram_with_meaning.pdfIn PDF document text
    • http://mkr-olimp.info/mirchi_telugu_1080p_hd_video_songsl5dld.pdfIn PDF document text
    • http://fosavaxenu.mypressonline.com/44550075249.pdfIn PDF document text
    • https://sakurulemiba.weebly.com/uploads/1/3/0/9/130969926/5304127.pdfIn PDF document text
    • http://1xbets-reg.site/51442849022z1kuj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000114af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114AF 5292 bytes
SHA-256: 105c1583013576414a9365398873064be5b9046e21f6491198f0596c8dece1ff
font_01_sfnt_off0001269a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1269A 12436 bytes
SHA-256: 89f13ac5429950c3a85f36a25e698099c75ad5deec89faeee2c2ae48f50667f6

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