Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe094920f2ccbf3…

MALICIOUS

PDF

77.3 KB Created: 2021-02-11 01:21:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: aba6c2b6f360e1d88a448a09224e76da SHA-1: 5451e53a47bcab0566c58938540e241c64834a11 SHA-256: dfe094920f2ccbf36e72886f18f9b3768d1e2e7bfa34b3f1d5b2831cc826ec00
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document contains a large number of external links, characteristic of a link farm or phishing campaign. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document likely prompts the user to install a browser extension or update to view content, a common social engineering tactic. While no scripts were directly extracted, the presence of numerous external URLs and the ML classification suggest a malicious intent to redirect users to potentially harmful sites or initiate further downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://seumenha.ru/123?utm_term=60+inch+samsung+smart+tv+best+buy PDF link annotation
    • https://zazalefofano.weebly.com/uploads/1/3/4/5/134578352/bolemisivi.pdfIn PDF document text
    • https://balebapu.weebly.com/uploads/1/3/5/3/135322653/kekusofoxugeniraze.pdfIn PDF document text
    • https://noxagutut.weebly.com/uploads/1/3/4/4/134483949/rugutukezitawol.pdfIn PDF document text
    • https://vujivizu.weebly.com/uploads/1/3/5/3/135305207/0c5ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489440/normal_5fe4f6f2c6e57.pdfIn PDF document text
    • http://trokot-tonirovka.online/thermax_absorption_chiller_manual0q5og.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468530/normal_5fe7364ad9f97.pdfIn PDF document text
    • http://arbitestpark.xyz/84787669096bnpth.pdfIn PDF document text
    • http://trokot-shopnew.online/sims_4_woohoo_animation_modsudr40.pdfIn PDF document text
    • http://batizilojado.22web.org/hach_pocket_colorimeter_ii_ammonia_manual.pdfIn PDF document text
    • https://kupolagaxex.weebly.com/uploads/1/3/0/9/130969851/2087512.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373997/normal_5fef633ab645a.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/kiremefegonar/holbrook_primary_school_ofsted_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/mi_a1_android_one_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/zazir.pdfIn PDF document text
    • http://vakusidoler.epizy.com/39161777170.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/bass_boosted_songs_bollywood.pdfIn PDF document text
    • http://xoxigibutu.epizy.com/free_attribute_gage_r_r_excel_template.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/fermentacion_aerobica_y_anaerobica.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/rivatisotodelok.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/espresso_machine_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/lejegiwadon.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/1724927853.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_off0000ee4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4E 5684 bytes
SHA-256: 02949456a4d28af4097373a72c3359f3d2af31dcb9f3b6446f115cc6c35c3278
font_01_sfnt_off0001017e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1017E 11308 bytes
SHA-256: 2d0b57d30eb2074412c7a710178629e48b5e7d2e8acc775e06aa0ac19bead843

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