Malicious PDF — malware analysis report

Static analysis result for SHA-256 5021431012fd11d3…

MALICIOUS

PDF

69.3 KB Created: 2021-02-11 14:23:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dbe65437d556bd2809625517adbda1f8 SHA-1: 0e0fa02b9db4a93b522479233137e3f897f794b2 SHA-256: 5021431012fd11d347b1e884c6d8c693e378af5f239ae6d4b71235f3cb37dc34
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://seumenha.ru/wix?keyword=enrich+biomes+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/vuzowadijavu/ieibhhO/pvp_rank_wow_vanilla.pdfIn PDF document text
    • https://cdn.sqhk.co/gabixeme/cu1Fmif/fnaf_vr_help_wanted_song_monsters_1_hour.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/hhajer2/kevovumexewopudud.pdfIn PDF document text
    • https://jixatazibasuv.weebly.com/uploads/1/3/4/4/134402985/mavaxanoxunexig_pifeniwofufi_wafuzoxitusuze.pdfIn PDF document text
    • https://cdn.sqhk.co/libavesonon/AjjhhLi/2176595825.pdfIn PDF document text
    • https://cdn.sqhk.co/mipekakiri/gfhhyYF/kurumifo.pdfIn PDF document text
    • https://cdn.sqhk.co/levuzivanu/Ahesegj/fear_the_walking_dead_series_4_cast.pdfIn PDF document text
    • https://belexikezetuvom.weebly.com/uploads/1/3/0/7/130775063/wudutola_govutovawuwodo_daposuminifev_jagute.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489429/normal_5ff6587f4c575.pdfIn PDF document text
    • https://cdn.sqhk.co/rekewuneboxu/MiiN7tF/winterhawks_skating_center_schedule.pdfIn PDF document text
    • https://gapudozesaneg.weebly.com/uploads/1/3/4/5/134525911/1f8b72c9a0257.pdfIn PDF document text
    • https://tigidejuremu.weebly.com/uploads/1/3/4/5/134502839/917105d53c6.pdfIn PDF document text
    • https://narodejezagog.weebly.com/uploads/1/3/3/9/133988416/4336752.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/rutufokedizon/todetuwor.pdfIn PDF document text
    • http://mogadaf.epizy.com/fannie_mae_student_loan_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/39715718984.pdfIn PDF document text
    • http://xanijidul.epizy.com/lagu_lily_cover_reggae.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/manualidades_con_material_reciclado_navideas.pdfIn PDF document text
    • http://rumajajoneder.rf.gd/vuwemosubolibuwi.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_off0000d341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD341 5260 bytes
SHA-256: b8129de979a0855c7ef69ff9919fa8261b080b86bb617847cecb2a7a5b3bcae5
font_01_sfnt_off0000e512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE512 10348 bytes
SHA-256: 407e40366dfcdf8208fa980ee13836735bd8f411ab40166ee10efd9a8bf01a61

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