Malicious PDF — malware analysis report

Static analysis result for SHA-256 e233348811d36008…

MALICIOUS

PDF

80.4 KB Created: 2021-03-19 06:18:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 66da7b46826443d030ccd3447a8e659e SHA-1: 208a0744433c5dc686d0aad7a4e9092d299fa806 SHA-256: e233348811d36008d520e9ef50855d909d38e5180dbd4e5f97527779a3cf2d08
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to SEO-optimized PDF hosting sites, suggesting a link farm or phishing campaign. The primary URL, https://soxebez.ru/wix?keyword=realidades+1+capitulo+4a+actividad+12+answers, is identified as a high-risk redirector. ClamAV detection and ML classification further indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=realidades+1+capitulo+4a+actividad+12+answers PDF link annotation
    • http://chambreop.xyz/panasonic_viera_plasma_tv_speakers_not_workingbfj0r.pdfIn PDF document text
    • http://bio-ita.fun/xexixc8o6i.pdfIn PDF document text
    • http://osthondroz.com/soccer_world_cup_2014_finali4mgo.pdfIn PDF document text
    • http://airet.space/what_is_a_nurse_practitioner_salary_in_canadaj8nw2.pdfIn PDF document text
    • http://jalazekesofijot.medianewsonline.com/42220562631.pdfIn PDF document text
    • http://sexesex.site/825336513971fgej.pdfIn PDF document text
    • http://navalny.design/64998126221ix8g9.pdfIn PDF document text
    • http://bigpleasure.ru/zulivevutojitenu1jjh0.pdfIn PDF document text
    • http://rozewevojalel.sportsontheweb.net/77505088420.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://medazupu.onlinewebshop.net/25354222450.pdfIn PDF document text
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_343c1f4212954aabbf98e182c57e6fa1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/fumetabi.pdfIn PDF document text
    • https://e5447efa-8854-4d04-834e-f0bbd7438c8b.filesusr.com/ugd/ac612b_bd05a8a7eb134033a15ad561c8a51dc4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/burkes_beach_surf_report.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/printable_puzzle_template.pdfIn PDF document text
    • https://ebcfae26-b4e4-4f1a-a5b2-c5bdbddc1bdf.filesusr.com/ugd/259f90_1011e49991fb4b2091260bfbf4dd683a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/ace_personal_trainer_manual_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/chandramukhi_songs_starmusiq.pdfIn PDF document text
    • http://gozudil.onlinewebshop.net/59087031133.pdfIn PDF document text
    • https://081e7fb2-604d-424b-9b75-a58d54a71a44.filesusr.com/ugd/abd6ea_5e2150c1798c4b1284ca19c919a13384.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/what_is_tcp_and_ip_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/mumutazomiketi.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_off0000f415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF415 5500 bytes
SHA-256: 73d6c29c6fa5f652ff39bef5b51e9e361116505a9e7ffcc32a7d663200a8959f
font_01_sfnt_off000106fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106FD 14092 bytes
SHA-256: db420bbabc6bb19872780f362fa339dd61bbb3fe663303a285c7151405edb926

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