Malicious PDF — malware analysis report

Static analysis result for SHA-256 355280fbcd46fd66…

MALICIOUS

PDF

76.6 KB Created: 2021-03-28 07:30:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a4721c9c6ed1db8e530371bf8da55448 SHA-1: dacb8cb9769bec22d73f432dbfdf30e6f3721b95 SHA-256: 355280fbcd46fd665f1cf11cb438f5cc59353148862ae8cd4cb9ea1392c9e63c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=killing+floor+2+field+medic+weapons PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414502/normal_5fc8e0f397b93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480893/normal_605fad3d64a33.pdfIn PDF document text
    • http://kesisofawa.mygamesonline.org/mubug.pdfIn PDF document text
    • http://vixinusagodax.scienceontheweb.net/adobe_reader_10_free_download_for_windows_xp.pdfIn PDF document text
    • http://rusakadovub.sportsontheweb.net/antrenmanlarla_matematik_3_soru_zmleri.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495399/normal_5fec904bb8b8e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450043/normal_5ff569f24d6b0.pdfIn PDF document text
    • http://msertis.xyz/craigslist_oahu_dirt_bikes_for_sale_by_owner358y8.pdfIn PDF document text
    • http://tiwilofojifig.sportsontheweb.net/which_breville_oven_is_the_best.pdfIn PDF document text
    • http://fabermanufacture.ru/que_es_el_minimalismoo8jwl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_603ec006c03d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476943/normal_605061ef60adf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480585/normal_5ff44d944c7ac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453142/normal_5ffe7ea6a623d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374369/normal_6033d02a4a2be.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xabudavadeguvo.myartsonline.com/demawo.pdfIn PDF document text
    • http://vakizonozajaxe.onlinewebshop.net/dogolulovezifu.pdfIn PDF document text
    • http://niselasot.atwebpages.com/carbetocina_farmacocinetica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96e63748-ec52-4b2f-b684-a7f8f2c80cf4/40960309189.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2336909e-e183-4798-adae-b8c3ee598211/is_there_a_new_fifty_shades_of_grey_movie_coming_out.pdfIn PDF document text
    • http://xomutojekes.myartsonline.com/braun_series_9_92s_electric_shaver_head_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e231e69c-909e-4e4d-a9cb-123671605581/bepokogoripe.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_off0000e9dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DC 5668 bytes
SHA-256: a2ce0ec205e91f0f46e6ea76b5712be0958a55e057f3d5f0ff11a52990f0fc72
font_01_sfnt_off0000fd2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2E 11824 bytes
SHA-256: d909436e6896cb25086882dc2333690c70a41315ea61b01e1ae54fba8940a124

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