Malicious PDF — malware analysis report

Static analysis result for SHA-256 360e9270a7af01b3…

MALICIOUS

PDF

78.9 KB Created: 2021-04-09 01:41:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a49048cec12df0bff8d9a99e1cc1f23a SHA-1: 3e694d912fdd1385b3b4ab5696974f0b2a8a209e SHA-256: 360e9270a7af01b35e1701829a1f7deea624e752ae43553c02a824898e6a2d39
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://mezovuduw.ru/strik?utm_term=adobe+premiere+free+download+windows+10 PDF link annotation
    • http://bestsaleshopin.xyz/nugupibaduxekugopivesgq08z.pdfIn PDF document text
    • http://pufivuziviv.mypressonline.com/conversor_de_para_word_online_i_love.pdfIn PDF document text
    • http://lestyprin.online/little_fires_everywhere_synopsisg27g9.pdfIn PDF document text
    • http://fonudesuwobulud.mygamesonline.org/jezuzozevutalujuxufokono.pdfIn PDF document text
    • http://hookup157.online/triangle_proofs_worksheet_1_answersbocng.pdfIn PDF document text
    • http://bumawusuka.mypressonline.com/physical_science_100_pass_study_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/xurawupo/Tekhggg/fantasy_premier_league_gameweek_7_picks.pdfIn PDF document text
    • https://cdn.sqhk.co/zatufora/jcic4jC/wewojojukomifojumeji.pdfIn PDF document text
    • http://pisufixefonof.scienceontheweb.net/breast_cancer_project.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/kMNb1gg/red_hair_color_wheel_chart.pdfIn PDF document text
    • https://cdn.sqhk.co/timadupak/L7LjdsH/followers_analytics_for_instagram_imetric_mod_apk.pdfIn PDF document text
    • http://tevutubiwij.getenjoyment.net/weber_grills_natural_gas.pdfIn PDF document text
    • http://nufudoze.getenjoyment.net/51794127266.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/gZjdjbW/67431347819.pdfIn PDF document text
    • http://fartook.online/axios_post_x-_www-_form-_urlencodedj4skh.pdfIn PDF document text
    • http://meetsol.xyz/kexalisavakileuavb.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/gihegfS/sun_racer_game.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/dd159267-9b4b-42c4-9c88-5cdd6b13d567/giporilavejovonipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb1edc36-84b5-4f0b-9407-7ccb70adfbdb/zerepodivawarizu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efc29171-76d2-4c00-92f4-89877756d9fd/gedupurufogigosixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c45ce8aa-4343-48c5-94b0-fd64aac78054/24551928042.pdfIn PDF document text
    • http://vakifavu.onlinewebshop.net/rofagefetivavulubufov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/615fbcc5-b8c6-4f71-929d-0aba507ea1e5/sodemadoweka.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_off0000f715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF715 5604 bytes
SHA-256: 275d218dba3ca0cd39b5ce2f842240f87a9092729652d4ffe2e87d0855f39104
font_01_sfnt_off00010a17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A17 10488 bytes
SHA-256: 9cfd3bbb80b1e24baaa75cd5d989c89a4f77975c5fe28bb640ebaff6d9fcb1e5

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