Malicious PDF — malware analysis report

Static analysis result for SHA-256 0727e610b9299f36…

MALICIOUS

PDF

78.3 KB Created: 2021-05-06 02:43:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 32be5c8ccd878eaf1893d9350b55ac98 SHA-1: 9615bf36745f981dd4eb1c2089fdce07b46429e7 SHA-256: 0727e610b9299f3684c1dd43300d8c3e9d1c5fc5206a9090da340b44e77ddcb5
126 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. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The PDF's content appears to be obfuscated or corrupted, but the presence of a link farm heuristic and the external URI suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://pelibifir.ru/strik?utm_term=power+xl+pressure+cooker+pot+roast PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4412396/normal_5ffc6bf8ab97e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453900/normal_604b3bfbbd2cd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382186/normal_5fce918bdc947.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_6067f3f5123bf.pdfIn PDF document text
    • http://pugezesiw.mygamesonline.org/33873932593.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447460/normal_5fe72988aec1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481285/normal_6039ca7c1a24e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464534/normal_602907203df1c.pdfIn PDF document text
    • http://usacreditscore.info/xibifovupumobamugelk0.pdfIn PDF document text
    • http://jebebixazonutug.mypressonline.com/el_lazarillo_de_tormes_tratado_1_la_venganza_analisis.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/how_to_start_ariens_deluxe_28_snowblowerq5eew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422368/normal_6008c0e1436ec.pdfIn PDF document text
    • http://janafan.scienceontheweb.net/budgeting_template.pdfIn PDF document text
    • http://itprod.space/chris_stapleton_songs_lyrics_and_chords7xbyn.pdfIn PDF document text
    • http://com-servers.online/metodologa_dela_investigacin_roberto_hernndez_sampieriup0no.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470688/normal_6059e903d242c.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/burger_king_menu_specials_2021_south_africa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403681/normal_5fcdf9adbe7d1.pdfIn PDF document text
    • http://newser.site/2653913194vnmk7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/119a6261-1f4a-464e-b41b-2e1108b012b1/lizedog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25caf20c-f666-4062-8726-650d5793c412/how_to_get_into_bios_lenovo_g50.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37586776-39be-4108-a29d-60925a37eb2d/salesforce_service_cloud_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d15f11a-7442-4a65-9eeb-215601c26f42/which_dyson_is_the_best_for_animal_hair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee416f0d-5f3e-49e3-931c-b76996f6f542/indian_stock_market_news_for_today.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0e8dc4d-e664-416b-b510-cca5f1184b30/electronic_devices_and_circuit_theory_11th_edition_solution_manual_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75c167af-9cfa-4d08-9793-77ccc008ac53/13549087631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/740f0f4e-64b2-42fe-92ac-2ab7192c4771/newojokanajiluriliwusaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaf5c80e-7495-4192-a90e-cafff71240ce/breville_juice_fountain_cold_plus_video.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_off0000f557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF557 5152 bytes
SHA-256: dfbec06695f64ea527f2cd65a338153d44824aaec4d72edf73452341bec7ce7a
font_01_sfnt_off00010704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10704 10632 bytes
SHA-256: d2e893d01a3e94743fad9ec7d9bfd776ddd1aa248cd79eacf9be8de5add4279c

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