Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b24118166974a4a…

MALICIOUS

PDF

73.0 KB Created: 2021-02-16 13:41:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5b7cde9cb464d0a6bad8fb8af8b2e325 SHA-1: f3bfa48b279de649ce288a222ee9f0ea795f011f SHA-256: 2b24118166974a4ac8af779171d802b6edecf7428ce082902a39425a87606822
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to suspicious domains and are likely part of a link farm or phishing campaign. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to malicious sites, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/123?utm_term=huskee+lt4200+price+new PDF link annotation
    • http://bred-enligne.com/kurs_angielskiego8mkgb.pdfIn PDF document text
    • http://idealicaitalia-official.site/59052328430xg2qu.pdfIn PDF document text
    • http://repair-monokoles.ru/ant_simulation_3d_full_mod_apk_downloadit4sr.pdfIn PDF document text
    • https://rilawexiretik.weebly.com/uploads/1/3/4/2/134267086/zixisukebizut-zerarajopuli-pipovadedena-fiferepofana.pdfIn PDF document text
    • http://senteber.site/capacitor_working_principlere1sj.pdfIn PDF document text
    • http://cmb-societe.com/dunaxn6a42.pdfIn PDF document text
    • http://cafe-cok.ru/free_download_mp4_movies_online0ek0s.pdfIn PDF document text
    • http://cmb-societe.com/murder_mall_escape_crazy_gameskvus5.pdfIn PDF document text
    • http://cosmosqrab.online/boggis_bunce_and_bean_sheet_musiclzmqe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vonusirukete/excel_templates_work_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/bollinger_band_trading_system.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/47683979860.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/happy_face_images_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/39829577385.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/odisha_reporter_news_video.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/lipatoto.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/jukujaxunaj.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD247 4968 bytes
SHA-256: 4eb0e99f5c31c0bc8bb15530d21337b10761f0a6a8c4fae2b3dd7ce1b34ab8ee
font_01_sfnt_off0000e355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE355 10564 bytes
SHA-256: 06831542bc589ae9ada9a3ea257ace6d60aeb9dcfe08419a571f2a90602bb3f8
font_02_sfnt_off00010753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10753 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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