Malicious PDF — malware analysis report

Static analysis result for SHA-256 10ac214083af9c52…

MALICIOUS

PDF

105.1 KB Created: 2021-03-04 15:31:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 10ace8ae506d946c031fb66f706c2adb SHA-1: 99e5abf839d91aa64e1c8b875b5d7f45ba86785e SHA-256: 10ac214083af9c52c37504965cc7e7a73dce7a129febac729e70ad866216ae36
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs, many of which point to disposable hosting and are likely used to redirect users to malicious sites. The document body, though heavily obfuscated, appears to contain search terms related to 'Crossfit exercise meaning in hindi', suggesting a lure to trick users into visiting these sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://zajinet.ru/strik?utm_term=crossfit+exercise+meaning+in+hindi PDF link annotation
    • http://robinmani.site/price_of_pioneer_ddj_sx2zfn9i.pdfIn PDF document text
    • http://tifoxikutawe.sportsontheweb.net/microelectronic_circuits_sedra_smith_6th_edition_solution_manual.pdfIn PDF document text
    • http://jozipuvuwuzaj.mywebcommunity.org/85397421986.pdfIn PDF document text
    • http://zopokujejisolan.getenjoyment.net/zodoxubixetojef.pdfIn PDF document text
    • http://nizewapujapoj.22web.org/maserati_quattroporte_gts_2008_review.pdfIn PDF document text
    • http://gopusoduj.mygamesonline.org/hamilton_beach_flexbrew_coffee_maker_single_serve.pdfIn PDF document text
    • http://kalulib.iblogger.org/f_and_p_guided_reading_full_lesson.pdfIn PDF document text
    • http://bubuletigesin.iblogger.org/lights_out_tour_2020_dates.pdfIn PDF document text
    • http://lidedapomegila.iblogger.org/menaparodabuxunuw.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/presonus_16.4.2_price1mqx9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://lamisegowa.epizy.com/15472382022.pdfIn PDF document text
    • http://tipikirobis.rf.gd/graphic_organizer_template_word_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7948b79-0c0f-4467-9804-77f221da7017/the_odyssey_homer_translated_by_robert_fitzgerald.pdfIn PDF document text
    • http://mepatizus.epizy.com/texas_reality_check_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e739b71c-11d3-4e8d-91cc-61e18f588968/why_is_my_computer_not_connecting_to_websites.pdfIn PDF document text
    • http://metotosebofetu.epizy.com/pc_antivirus_free_2018.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/dezebevejafiwesotekedipo.pdfIn PDF document text
    • http://kozifina.epizy.com/pomenulovisevisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b412b609-c101-4246-9cf0-52b2e3d3213c/74150679871.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000133e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133E4 5376 bytes
SHA-256: 7cc718701870f9cfab5647f4ca5816e65c2d8d632725ddb063354870bd5421e2
font_01_sfnt_off000145fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145FE 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off00015161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15161 12020 bytes
SHA-256: cd84112667d07729cc0662383d9993776b244d798d046d54a1cc445c1e97a941
font_03_sfnt_off00017a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A95 7352 bytes
SHA-256: 54096cbe640f5b3a5c736eb8e45b9f0e3f1deb5a6fd7419010dcf5e90552165e

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