Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6cebbcdabb9fea…

MALICIOUS

PDF

86.8 KB Created: 2021-04-20 11:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5b0619a7de48eea06bcf2982b63792fc SHA-1: e5a2ea8d2dc548677ba4b7899dcd42bd71e8de70 SHA-256: fe6cebbcdabb9fea7bebdb4efd9720f1e6ae5e8f46242cfe45deff88c6bb2de8
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which are part of a link farm designed to redirect users to potentially malicious sites, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic. One prominent URL, 'https://xezojetit.ru/strik?utm_term=adobe+photoshop+cs5+crack+mac', suggests a lure related to cracked software. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 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://xezojetit.ru/strik?utm_term=adobe+photoshop+cs5+crack+mac PDF link annotation
    • https://cdn.sqhk.co/jasowipe/Zifgege/sekulirebupolalum.pdfIn PDF document text
    • http://8gusevshop.website/android_auto_update_australia41oue.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/igfhiKL/rozabewijuwav.pdfIn PDF document text
    • http://datidino.iblogger.org/lonakeviluwuxama.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/QdNq1gi/25115712053.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/Jghgdji/dimegenoxupon.pdfIn PDF document text
    • http://sberbank.services/28184867538uwtj1.pdfIn PDF document text
    • http://antinomi.design/what_is_the_history_of_the_come_and_take_it_flagmgk81.pdfIn PDF document text
    • http://nenugatigubom.66ghz.com/sigozelomejulepid.pdfIn PDF document text
    • http://yeswins.space/book_of_romans_bible_study_questions_and_answers8329a.pdfIn PDF document text
    • https://cdn.sqhk.co/volumusigu/iiRghhe/is_soccer_football_in_australia.pdfIn PDF document text
    • http://fofunido.iblogger.org/revista_natura_ciclo_10_2020_argentina.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f039f7e9-c7fa-441d-bf3d-2f0e35d6be10.filesusr.com/ugd/80685d_6a99e73b00c94ae1888870bcbb9e0ea2.pdf?index=trueIn PDF document text
    • https://84daacc9-7e90-4c5d-b1ed-526950900c49.filesusr.com/ugd/73f3b0_4843deeca2414a41854e0230e2044f40.pdf?index=trueIn PDF document text
    • http://vikenigekewojo.epizy.com/monthly_business_expense_template_excel_free.pdfIn PDF document text
    • http://poxipepeti.epizy.com/can_you_use_nuna_pipa_with_uppababy_vista.pdfIn PDF document text
    • https://c83cbd6e-a134-4b49-ba12-49f24c654ad9.filesusr.com/ugd/904a8b_6a8d9bec4bdf444e9ffb278131198d40.pdf?index=trueIn PDF document text
    • http://goxabobuti.rf.gd/12243238344.pdfIn PDF document text
    • https://590703a0-be71-4d3c-a49f-17767d5969ef.filesusr.com/ugd/656c20_410a82cca47e499b91608fdbddd430fe.pdf?index=trueIn PDF document text
    • https://d2ea4bfc-f92a-4379-acf2-d9b69981ddb7.filesusr.com/ugd/739437_42a6c461ed9744c0ac1cc979eb0dd2c9.pdf?index=trueIn PDF document text
    • http://kidogip.epizy.com/sample_invoice_template_uk.pdfIn PDF document text
    • https://fae5df41-d68b-4d62-9961-cd33801cec7e.filesusr.com/ugd/f52c73_b0b2a04a6fe54273b619d07078d9cacc.pdf?index=trueIn PDF document text
    • https://e809654a-a95b-4dbc-a338-24085255a2f8.filesusr.com/ugd/1b6cec_d2597e4da8b64f799b4e5052e54f9126.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_off000115c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115C9 5596 bytes
SHA-256: a7bea23f4c81b0c2e3d803d61bc4a6f5b3bc36ae1b2f44c4950c2ca9ed0c29a9
font_01_sfnt_off000128ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128AB 10940 bytes
SHA-256: 739c97a8c992e873daf2b4383869ef774323a28525583c804f7742b40e1d837a

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