Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e62e523348ea51…

MALICIOUS

PDF

96.6 KB Created: 2021-02-11 13:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 81eb49f334306e157cf1f3f7d77663e2 SHA-1: 7e3155371248865a58acd8e8617cd1138eb64069 SHA-256: 36e62e523348ea51a53eeccdc415b1f92ca0fcdf0134e67937cffc83ac621a8f
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or SEO spam campaign. It contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection mechanism. The embedded URLs likely serve to drive traffic to these external sites, potentially for malicious purposes such as distributing further malware or conducting phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wb?keyword=captain%20marvel%20post%20credit%20scene PDF link annotation
    • https://xibemorebag.weebly.com/uploads/1/3/4/3/134355918/05b458d6ef.pdfIn PDF document text
    • https://letotanuvimipe.weebly.com/uploads/1/3/4/5/134598603/takawogiteb_fivuvulemamij_wekimur_zofomam.pdfIn PDF document text
    • https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/05a69d1e.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/cBjaYgj/free_programs_to_download_music_from_youtube.pdfIn PDF document text
    • https://zopamege.weebly.com/uploads/1/3/5/9/135966764/pobovu-demobopa-vujapepijewi.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/oicohe0/zusaretiwa.pdfIn PDF document text
    • https://werevofapopaja.weebly.com/uploads/1/3/4/4/134492388/silasukipiwabu-velokimere-limujitow-zagujeb.pdfIn PDF document text
    • https://kexipana.weebly.com/uploads/1/3/2/7/132740250/078c3fa0fb.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/ietepkr/neo_geo_arcade_stick_pro_hylo_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/Qha5jaQ/netflix_series_away_trailer.pdfIn PDF document text
    • https://nagiliju.weebly.com/uploads/1/3/1/4/131412426/3f60a194.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/bad_boy_tungevaag_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/octagon_trendy_news_magazine_html_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/wutujujatinovavapu.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/31060632399.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/72521510660.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/bohemian_rhapsody_trumpet_sheet_music_solo.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/bayko_aali_badlun_marathi_movie_song.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EB6 5184 bytes
SHA-256: 4ae7a799d5f582c8f869b3f58821867d371aeb8595c7379931c22468dfde2eb7
font_01_sfnt_off00015044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15044 11172 bytes
SHA-256: 279671dabc5a2d7839cbcadd36afea02e45870cca6376766a9e948516bb59886

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