Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fd528c97294df77…

MALICIOUS

PDF

76.8 KB Created: 2021-05-16 15:43:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 506c1d28b075be33ad67fe65f8f311aa SHA-1: dea15dda1e3332e197f018d6e9b217eed0f937a8 SHA-256: 9fd528c97294df77368a0341c2f33d571159d03196c875074f79fa924db82986
126 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

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://soxebez.ru/strik?utm_term=which+is+the+best+corded+phone PDF link annotation
    • https://rinavupitaf.weebly.com/uploads/1/3/1/1/131164375/duzasepojovati.pdfIn PDF document text
    • http://bijowuxupolapi.sportsontheweb.net/73250692168.pdfIn PDF document text
    • https://gowapatemik.weebly.com/uploads/1/3/5/3/135319450/suzujizozikavavow.pdfIn PDF document text
    • https://lefitujeledezov.weebly.com/uploads/1/3/6/0/136028835/43014b9f1d1c7.pdfIn PDF document text
    • http://dodajavux.scienceontheweb.net/fekoluziworuxefodataganid.pdfIn PDF document text
    • http://wajazenizur.mywebcommunity.org/alter_ego_1_free_download.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/big_data_analytics_with_spark_mohammed_guller_free_download.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
    • https://s3.amazonaws.com/mogipegi/answer_me_1988_gif.pdfIn PDF document text
    • http://kuwitabetegipo.myartsonline.com/boko_haram_history.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/green_cheeked_conure_care_guide.pdfIn PDF document text
    • http://bejanifezilo.atwebpages.com/vovuvoruvizebusobonev.pdfIn PDF document text
    • https://e5720c39-3c1c-4a52-9be9-509675281b5a.filesusr.com/ugd/0010c8_e375a218cd71485f8997623d3b3401d5.pdf?index=trueIn PDF document text
    • https://203e7bc3-08d7-4ecc-a8df-f797e0d4a079.filesusr.com/ugd/d4579c_5f9296f237eb487c8d52b79fa1af70cd.pdf?index=trueIn PDF document text
    • http://pudosuvosav.atwebpages.com/mapa_de_playas_de_asturias.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/what_is_addie_process.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/33368127040.pdfIn PDF document text
    • http://sebokegekesuded.atwebpages.com/gigawogoregezuminum.pdfIn PDF document text
    • http://wegamaluperetuj.atwebpages.com/55575153921.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/answer_key_basic_tactics_for_listening.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_off0000e387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE387 4860 bytes
SHA-256: e1c916fcc8e3ac0fab7edcac52d2fa8a076c71a7fddbcbbf807283fe659c415e
font_01_sfnt_off0000f3f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F8 10476 bytes
SHA-256: da87db7c332580126e25f86bc35f5e015b792dac761bef1841ddc4a4f6484835
font_02_sfnt_off000117e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E0 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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