Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebe03a4379e1b36f…

MALICIOUS

PDF

79.5 KB Created: 2021-03-07 17:15:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: dc3abf64942891164c037eaf2852a574 SHA-1: 4cf815ff2e676dfefa73c98a2ff714f0fb90f700 SHA-256: ebe03a4379e1b36fb62c61dfe03eb5a9a6d7e5d9b57b045b113369e4d6c7e271
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a phishing or malware distribution scheme. The presence of external URIs and the 'link farm' heuristic further support this, indicating the document's primary purpose is to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jottigo.ru/strik?utm_term=the+pilgrim%2527s+progress+2019+sequel PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378157/normal_5fd301cd54f33.pdfIn PDF document text
    • http://gixodugesu.medianewsonline.com/pudogek.pdfIn PDF document text
    • http://olx-delivery.cc/25584463739b5f2u.pdfIn PDF document text
    • https://cdn.sqhk.co/resesexiraf/H0hige6/28566050333.pdfIn PDF document text
    • https://cdn.sqhk.co/kopuzeginev/LGc2wgj/global_warming_definition_geography_ib.pdfIn PDF document text
    • https://cdn.sqhk.co/loxinesupiva/ThrVgc7/79842499753.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378167/normal_601103f0405f1.pdfIn PDF document text
    • http://nikecortez.net/sketchup_make_free_download_for_mac1zw9k.pdfIn PDF document text
    • https://cdn.sqhk.co/sajixobuko/1CheYgh/kimebonudipeligozapef.pdfIn PDF document text
    • http://rodina38.ru/fear_free_module_4_answers6oh3g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460982/normal_602f3bf2a0bca.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/78015012992.pdfIn PDF document text
    • http://paktum.pro/sharepoint_designer_2013_set_item_permissions2ky7a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489843/normal_5ff671b1be14c.pdfIn PDF document text
    • http://modezewop.mygamesonline.org/rue_21_printable_application.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/ghbgcar/kovexiviwor.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/dumazitigi.pdfIn PDF document text
    • http://duplicwcnj.space/noramabenafasopob2cz7s.pdfIn PDF document text
    • http://zibepifutidi.sportsontheweb.net/xebevoso.pdfIn PDF document text
    • http://lejidakoxinetog.mywebcommunity.org/lujorekeposabavavewezu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370068/normal_5ffd746d7fd78.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/rizijubovapuk/sojedinaxupivuzazapefudu.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/osrs_ultimate_rune_pure_guide.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_off0000f8a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A2 5612 bytes
SHA-256: 38ec0391e27c748966a8fd0c8ba031285d1c2cf23068607e66a998f2d8ee64c7
font_01_sfnt_off00010b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B9F 10656 bytes
SHA-256: f3cdf53d5eaf10fa968d5c50d2878714f44f7b8247e0a9187935d7961e31202c

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