Malicious PDF — malware analysis report

Static analysis result for SHA-256 ede77015faac9f76…

MALICIOUS

PDF

76.8 KB Created: 2021-03-17 17:25:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 7ec83146e1e6fa0c16c45fad3ed5d38a SHA-1: 0dec393050a862beef92128e12d82dafe95aecaf SHA-256: ede77015faac9f761dd4d41e6b24bf6231d0c689869ed673dc8ecc2196c1d702
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, many of which are structured as link farms. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing or trojan activity. The document body, though heavily obfuscated, contains text related to 'call forwarding t mobile', suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xajibur.ru/strik?utm_term=how+to+turn+off+call+forwarding+t+mobile PDF link annotation
    • http://cybety.xyz/bedinowimujitexopamivkw6be.pdfIn PDF document text
    • http://promooffer.site/ielts_5_practice_tests_academic_set_2_answers2qtay.pdfIn PDF document text
    • http://medway24.com/slope_intercept_form_worksheet_easyqilrr.pdfIn PDF document text
    • http://paksorond.xyz/cuales_pokemones_legendarios_aparecejzxg7.pdfIn PDF document text
    • http://shop-profildoors.ru/guwopokdnk02.pdfIn PDF document text
    • http://carishr.com/beauty_and_the_beast_piano_sheet_free88ht6.pdfIn PDF document text
    • http://edevletorg.com/hookah_bar_video_song_free84enh.pdfIn PDF document text
    • http://sks-expertiza.ru/62055810870palvz.pdfIn PDF document text
    • http://copyrightnotices-form.com/just_ameerah_slimeatory_appd5zxd.pdfIn PDF document text
    • http://redtea.space/mixoruzazoxuliguwon1xesy.pdfIn PDF document text
    • http://kkkirrreeee.space/70234673517bbpmm.pdfIn PDF document text
    • http://prodson.fun/mogesawodeti7nkg4.pdfIn PDF document text
    • http://swiss-gear.store/87458396111bl3df.pdfIn PDF document text
    • http://lynciguest.com/dk_merriam-_webster_children_s_dictionaryo9p52.pdfIn PDF document text
    • http://winoorama.fun/72788473993vih9q.pdfIn PDF document text
    • http://brumbum3.xyz/photoshop_shortcut_keys_banglaeejsj.pdfIn PDF document text
    • http://honbiz.pro/how_much_do_restaurant_owners_get_paidbhgxv.pdfIn PDF document text
    • http://relax35.ru/astronomy_today_free_downloadqhk51.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/zedilegol/21917476901.pdfIn PDF document text
    • https://3a5aa097-47f9-475f-9992-83bceef25cc3.filesusr.com/ugd/f55bec_cc614a011b154929a72c005b12bbe292.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/davivogavuvo.pdfIn PDF document text
    • https://3ced707c-20bd-49bb-93f1-edb15be4e391.filesusr.com/ugd/e90305_14182d701f8f46b99080b11f56181043.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/misumemamagobo.pdfIn PDF document text
    • https://c788b29d-df2d-4d46-9946-349e8cce89b7.filesusr.com/ugd/a9e086_97ea7e3e345d471ebdacc3845027f970.pdf?index=trueIn 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_off0000edb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB3 5356 bytes
SHA-256: d22f1ca2934bc7b8aaefd8c78eac927623f9a96ced2a573c42c105a7b63194e2
font_01_sfnt_off0000ffe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE3 11196 bytes
SHA-256: 0627d67eae41e81255a62e96b41bcb2a6693dfc377a3c735f32c8a0a24a50fac

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