Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7b122bbe162941…

MALICIOUS

PDF

79.7 KB Created: 2021-03-09 17:34:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 00f702e789fa7211e89af28be5b5bcad SHA-1: a45d3fe7fb341d4cc265d938588b8e84de5d54f4 SHA-256: 1e7b122bbe162941b9b85c777015ed8da824b75a2fa195c5e533ff50f345c841
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. While no scripts were directly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially malicious sites, possibly for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://golowaki.ru/strik?utm_term=what+is+another+word+for+smooth PDF link annotation
    • https://cdn.sqhk.co/wokiwife/ggdThgR/xiromefon.pdfIn PDF document text
    • https://cdn.sqhk.co/nopavoboriru/za9nif9/furniture_for_minecraft_pe_mod.pdfIn PDF document text
    • http://jotafitosixa.getenjoyment.net/learn_to_draw_cartoons_book.pdfIn PDF document text
    • https://cdn.sqhk.co/buxoxurobewi/hiRwjdK/tijadoroxazerojok.pdfIn PDF document text
    • http://pribor-poverka.site/58157016729079lk.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/how_many_books_of_fifty_shades_of_grey_are_there.pdfIn PDF document text
    • https://cdn.sqhk.co/felinavaw/SibGoge/mod_herobrine_minecraft_1._12_2.pdfIn PDF document text
    • https://cdn.sqhk.co/laruxibut/erykgj3/playstation_5_cyber_monday_drops.pdfIn PDF document text
    • http://fresh-ita.fun/89208767750745t6.pdfIn PDF document text
    • http://creditscoreusa.info/who_is_the_strongest_godzilla_monsterxcye7.pdfIn PDF document text
    • http://callup.today/trigonometry_revision_ppt_tesvie28.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/lupuvogotog/40812649649.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/python_3._7_32_bit_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/wusexibanug.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/car_wash_checklist_template.pdfIn PDF document text
    • https://0ca3454e-05ac-49fc-8d00-644b1af7be3c.filesusr.com/ugd/8bf3fc_0d116265454240de9f4ebfbc2ec4de1c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rejiner/auditoria_interna_mexico.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/36093930088.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/tanorawobilepumud.pdfIn PDF document text
    • https://b913155d-2712-4fd4-bcc6-651970a8c456.filesusr.com/ugd/e39924_f27d40200d9a4aa88123f8988b5dd141.pdf?index=trueIn PDF document text
    • https://5fb42ee6-a9be-400a-98f2-f9d4b9f720c8.filesusr.com/ugd/1813b3_2baa14dad8e54c268a4e4691b0206453.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/88121536908.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/jazogut.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/is_alone_on_netflix_good_for_hindi_movies.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_off0000f018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF018 5008 bytes
SHA-256: ed92826d14f1d367e7fd79b426fa089b9c510bc5fe679bdaf1642025f62ef86e
font_01_sfnt_off000100ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100FF 10000 bytes
SHA-256: e02ef3c529315666510414add3a9c9c631135de3e7aeb33cfe0eb8fba3efce7e
font_02_sfnt_off0001233d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1233D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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