Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e98934807304a4b…

MALICIOUS

PDF

87.4 KB Created: 2021-03-08 22:33:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 3bfbdf9e2cbc95df0d5222b08a8ff678 SHA-1: c0470724015b236fb3ccd7235ac11a6cd958987e SHA-256: 9e98934807304a4bacf3f9d2d6b4a3991a2d1f571b277fe7802c130381803b02
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, with a high heuristic score for being a link farm on disposable hosting. Numerous external URIs were extracted, suggesting a phishing or malware distribution attempt. The document body contains garbled text, indicating it is not intended for human readability but rather to host links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://soxebez.ru/award?keyword=army+apft+standards+2020+pdf PDF link annotation
    • http://masexuzijavigap.iblogger.org/vikupoxuradu.pdfIn PDF document text
    • http://presalon.xyz/107993710699lt19.pdfIn PDF document text
    • https://gubukaxonular.weebly.com/uploads/1/3/5/3/135349028/xitosefabigatu-fapax.pdfIn PDF document text
    • http://bagomebefekixob.getenjoyment.net/39967423213.pdfIn PDF document text
    • http://desajegurake.scienceontheweb.net/gesulot.pdfIn PDF document text
    • http://mmuuue.space/muvejarizanitevoxiiywzc.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/dermatitis_contact_allergy.pdfIn PDF document text
    • http://virona.org/secrets_of_jewish_wealth_revealedzo8a8.pdfIn PDF document text
    • http://best-store.club/kymco_mxu_450i_service_manualrmw2b.pdfIn PDF document text
    • http://help-feedback-amzn8.xyz/risopazotosuxewozoj04rt1.pdfIn PDF document text
    • http://jovopomutulilo.medianewsonline.com/tiwapowu.pdfIn PDF document text
    • https://wolunogejafijut.weebly.com/uploads/1/3/4/6/134649672/99ea09fafe49eee.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://40785fcd-1e5e-4316-9306-5db1d5795eae.filesusr.com/ugd/2f07a1_a74b0cba04184db5860f65be8499ab24.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xajowu/aarambam_movie_songs_telugu.pdfIn PDF document text
    • https://a0d2adcf-75bd-42a9-a42a-c23e1c6e9e1a.filesusr.com/ugd/85c99c_6a46c528a80541d5b156b9d3938bac72.pdf?index=trueIn PDF document text
    • http://gixarewujedel.atwebpages.com/7979008805.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/tour_guide_karimunjawa.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/aaru_tamil_movie_bgm_free.pdfIn PDF document text
    • http://dewenulemugu.epizy.com/cursos_gratuitos_marketing_digital_online.pdfIn PDF document text
    • https://73af689e-4c80-4f62-99d3-7a886641ad81.filesusr.com/ugd/3b5dd9_d4441562cd52422aa5a8d1779052e692.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/xesoxajij.pdfIn PDF document text
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_728f67e13e3c4b3c817723af2ec69cf0.pdf?index=trueIn PDF document text
    • http://padapafodimaf.rf.gd/vogijugiw.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/how_to_draw_a_person_simple_and_easy.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_off00010489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10489 5032 bytes
SHA-256: 266e5eb1abf500c3fbbcc4d3c005eb7565f3d83f31069a521803c00487ec45af
font_01_sfnt_off00011572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11572 13916 bytes
SHA-256: 1b8a99bca69757992954b384bf26e07fbbe1c50fc3e15e12925ed16077bdfa1c
font_02_sfnt_off0001415c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1415C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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