Malicious PDF — malware analysis report

Static analysis result for SHA-256 e17fd27649b8c291…

MALICIOUS

PDF

79.3 KB Created: 2021-04-01 14:35:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 161b873ce8356f9d076ed8fa572dd2c3 SHA-1: 13b44d56c41012ff9a8eda7a173f9e8bb7f66675 SHA-256: e17fd27649b8c29169c7e2768397a17167c4f1d739433c36364f0c0d74028127
156 Risk Score

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 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 0.9967

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 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://gimoguvi.ru/123?utm_term=agneepath+telugu+songs+free PDF link annotation
    • https://cdn.sqhk.co/wezufunin/gcG1hfh/bubble_shooter_4_download.pdfIn PDF document text
    • http://nanebaxexob.getenjoyment.net/xegegofividodomufa.pdfIn PDF document text
    • http://fezatubiwe.getenjoyment.net/ludezibesodinijopawedowa.pdfIn PDF document text
    • https://cdn.sqhk.co/belesobikezi/pliaCdQ/emergency_call_locked_iphone_x.pdfIn PDF document text
    • https://paleforekirito.weebly.com/uploads/1/3/4/5/134579508/1180794.pdfIn PDF document text
    • https://cdn.sqhk.co/rubupidorinu/bgjiiii/pocket_tanks_250_weapons_free_download_for_android.pdfIn PDF document text
    • http://jusukigib.sportsontheweb.net/75377749920.pdfIn PDF document text
    • https://xutekesavugev.weebly.com/uploads/1/3/5/3/135316407/zizazamilafeze-ketirevewewava.pdfIn PDF document text
    • https://fijapirugonobi.weebly.com/uploads/1/3/4/3/134315317/tafepon_kopivadamajulek_fovubikiwas.pdfIn PDF document text
    • https://cdn.sqhk.co/tatogevi/HRianie/biohackers_series_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/ahh9jaV/don_t_rush_meaning_song.pdfIn PDF document text
    • https://wujawosekeg.weebly.com/uploads/1/3/4/7/134712458/zedonibufozimif-xobaxereleliro-dofogetubibuze.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/03a4e88e-9f36-436f-a960-4cd72c429fd7/netbeans_java_config_file.pdfIn PDF document text
    • http://vilumepidiwego.myartsonline.com/pezekul.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/dofutajotuxeto.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/diploma_electrical_engineering_government_jobs_in_gujarat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bb08b6a-9999-4a6f-8f34-9baa326f38a4/place_value_definition_3rd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/automatic_gun_sound.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/blogging_ideas.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/lafovu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16e87794-3e79-4e50-8c77-29fc0ed53265/block_diagram_algebra.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/71427883214.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff51e043-a83b-424a-87c2-8c2a5b36b469/what_is_the_cost_of_a_postage_stamp_in_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/pages_cookbook_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/75462289886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/386fc444-35fd-4156-a87f-c2cbe5cb50cf/konuno.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_off0000f646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF646 5152 bytes
SHA-256: 07bf1cd54fe56e4c57d4de265af9bc448a3c7e7052d845afc9527ec155461dc1
font_01_sfnt_off000107d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D0 11196 bytes
SHA-256: d239b1f4481e5f11128ff7b7ddf5c4b5aa53301c7eb9547d3eb17f8cff054e9a