Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bee3073c00a3994…

MALICIOUS

PDF

76.0 KB Created: 2021-05-16 06:24:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5fdb854d4e4f86c1e2037134232aa068 SHA-1: ecaffa958110de52a98ad0db47c66007c1d50786 SHA-256: 4bee3073c00a39947517008b1d27891c9a5eceacb1b6dde4f1b9fecf64ab8132
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many of which point to domains associated with SEO link farms, suggesting a phishing or malware distribution campaign. The embedded URLs likely serve as lures to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/strik?utm_term=is+all+souls+day+a+holiday+in+the+philippines PDF link annotation
    • http://ecoterritory.store/othello_unit_testg2vwm.pdfIn PDF document text
    • https://sibomidejuxeda.weebly.com/uploads/1/3/4/5/134599986/371686.pdfIn PDF document text
    • http://extrameets.fun/sikiru_ayinde_barrister_songs_freeqb62m.pdfIn PDF document text
    • https://cdn.sqhk.co/zitajazasu/plehbm1/20267068095.pdfIn PDF document text
    • http://tactical-jacket-sale.shop/logarithms_laws_worksheetsr61f.pdfIn PDF document text
    • http://hargotel.xyz/rikal4cges.pdfIn PDF document text
    • https://cdn.sqhk.co/togareguko/qrPjhG9/34974446530.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/lid8PIZ/define_township_government.pdfIn PDF document text
    • https://gerudupox.weebly.com/uploads/1/3/2/7/132712596/1624423.pdfIn PDF document text
    • http://peskomment.ru/wijuwviorp.pdfIn PDF document text
    • http://iciko.xyz/how_to_fix_preview_handler_in_outlook_2016q5dbp.pdfIn PDF document text
    • https://bexenexitefixu.weebly.com/uploads/1/3/4/7/134725849/584972.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/loxopudizus/nc_state_online_computer_programming_certificate.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/generate_word_document_from_template_java.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a5c3841-d93b-41bd-8933-fe538f0d789c/dilute_solution_definition_science.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/android_sqlite_crud_application.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aed4996-386f-429f-8e8c-644acba9ff95/how_to_remove_a_blomberg_dishwasher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9edc22f5-3a0b-4cee-921b-5d84d9c827c3/kenneth_e._hagin_net_worth.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/54339569773.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/418360e1-a7f1-42ab-8e85-8ceab8605ca8/ti_84_calculator_free_app.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/appleseed_alpha_parents_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf8feb81-fa44-471b-8658-fbf7a586ac0e/dimagi.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_off0000ea16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA16 4988 bytes
SHA-256: b5ce9fd4c54ca6b1d458a9e5f89645cfad692a8c4953b9baf7e15aa7545f098d
font_01_sfnt_off0000fb10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB10 11560 bytes
SHA-256: aa0294a8603b50a1e2452670dfdc0448fbfb4b9ddf4c0bfe03b3772af2c88023

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