Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ade312323b87e6f…

MALICIOUS

PDF

87.1 KB Created: 2021-03-28 17:07:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b8649f946671229b1da62dca6aa2f731 SHA-1: 42ea586ab93f7534d3fc22a4015c53905dc9cee2 SHA-256: 2ade312323b87e6f9fcb3a6ee9722699afd01c003eb6ef0256c5da7da996da36
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 and link farms, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, likely as a first stage of a phishing or malware delivery attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://vilenefex.ru/strik?utm_term=what+are+some+good+warehouse+safety+tips PDF link annotation
    • https://cdn.sqhk.co/lepudijazur/Phgeoic/33031241329.pdfIn PDF document text
    • http://nebatomefov.scienceontheweb.net/coutume_betsimisaraka.pdfIn PDF document text
    • https://cdn.sqhk.co/nijusukelok/cASIjeh/aliens_movie_in_telugu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421335/normal_60403072d8231.pdfIn PDF document text
    • http://zixudivibudizu.scienceontheweb.net/binary_decimal_hexadecimal_octal_conversion_method.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403128/normal_6052c93654490.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380068/normal_601981819fae1.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/686186467250q4gk.pdfIn PDF document text
    • http://tulusujubige.mygamesonline.org/how_much_weight_can_you_lose_on_gm_diet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401989/normal_5ff26244705c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480582/normal_60136a09e708a.pdfIn PDF document text
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446762/normal_5ff9065831a16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413000/normal_5fe9304f08509.pdfIn PDF document text
    • http://shmelev.pro/viwali4kedq.pdfIn PDF document text
    • http://byt-upak.ru/gcse_english_language_paper_1_sample_answers8ymua.pdfIn PDF document text
    • http://kartaidatodemeleri.com/357055423566lwjv.pdfIn PDF document text
    • http://forovasax.medianewsonline.com/beautiful_creatures_movie_free_online.pdfIn PDF document text
    • https://cdn.sqhk.co/dojoxuwote/hjBjhJk/wizukogenofewixekajereras.pdfIn PDF document text
    • http://cafechorsu.ru/fuduwibutomiwalebuwisoge5xebb.pdfIn PDF document text
    • http://wirelessinfo.ru/advantages_and_disadvantages_of_administrative_management_theorynpn8s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376375/normal_60207ebcdcf53.pdfIn PDF document text
    • http://verenica.net/xopanugoboniszopu4.pdfIn PDF document text
    • http://grantmedica.ru/telugu_books_online_free_downloadyi8tt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tipipigi.atwebpages.com/definition_of_remedial_teaching.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_off000116f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F1 5628 bytes
SHA-256: 8485d5bd16936a5fdba556a9806f48e0640c6845893a6deec5b6d8eb74a454f0
font_01_sfnt_off00012a0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A0D 10772 bytes
SHA-256: 9cd288aa0e420cdb55d2eb97405da2cfb6dfaaf3f274fd3343af4b1dfb26579e

Open this report in the interactive analyzer, or submit your own file for analysis.