Malicious PDF — malware analysis report

Static analysis result for SHA-256 6080041d9036b235…

MALICIOUS

PDF

83.9 KB Created: 2021-03-15 18:10:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0e7d6f1c52638a614a68f750b456efa6 SHA-1: 4e73e25f29630dac7865d96ae6451fd332a66d1d SHA-256: 6080041d9036b2352e9f7dfe64bf0c0f0dc37d915a86be8d9c7dbf1bd892ba8b
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and is identified as a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. The document body is heavily obfuscated, but the presence of external links points towards an attempt to redirect the user to potentially harmful websites.

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://seumenha.ru/strik?utm_term=keurig+2.0+k300+parts+diagram PDF link annotation
    • https://cdn.sqhk.co/burexewejam/ifcZVA3/26453151667.pdfIn PDF document text
    • https://rujemadatidugu.weebly.com/uploads/1/3/4/7/134747735/levokexegisiwexaseve.pdfIn PDF document text
    • https://cdn.sqhk.co/kisibijobu/Nzhdie9/balasore_weather_report.pdfIn PDF document text
    • http://7lessons.site/lynx_bus_37_timetablebfrdg.pdfIn PDF document text
    • https://fobepuwup.weebly.com/uploads/1/3/1/0/131070598/f0a15e58.pdfIn PDF document text
    • https://xatomurukazaj.weebly.com/uploads/1/3/4/3/134378662/fejisavog-semavepa-reriduzuripa.pdfIn PDF document text
    • http://afracheat9.xyz/poster_presentation_template_ppt_freewereh.pdfIn PDF document text
    • https://cdn.sqhk.co/legikowe/dUvoyyj/lusijulolomilinenav.pdfIn PDF document text
    • http://smartbright.club/united_nations_peacekeeping_missions_military_logistics_unit_manualjiije.pdfIn PDF document text
    • http://freefire-gifts.com/bts_fake_love_song_musicpleere8khi.pdfIn PDF document text
    • https://wisufomerimugil.weebly.com/uploads/1/3/4/0/134016782/e61464cea.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/tabela_de_consumo_de_energia_eletrica_de_eletrodomesticos.pdfIn PDF document text
    • https://pejudipevunasu.weebly.com/uploads/1/3/5/3/135351173/jaxowujab_rurululubizu.pdfIn PDF document text
    • http://xonitaj.mywebcommunity.org/jarugen.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuwutitaw/fjdHdgG/34853120456.pdfIn PDF document text
    • https://cdn.sqhk.co/bomagomax/f1qZhdn/fusiform_aneurysmal_dilatation_of_aorta.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/voropa/what_does_dreaming_of_a_cat_giving_birth_mean.pdfIn PDF document text
    • http://nejarisiwudu.atwebpages.com/revised_an_introduction_to_project_management_6th_edition_by_kathy_schwalbe.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/3537083358.pdfIn PDF document text
    • https://e5720c39-3c1c-4a52-9be9-509675281b5a.filesusr.com/ugd/0010c8_6578db5da763447faa2e6fab173d8cf5.pdf?index=trueIn PDF document text
    • https://d321836a-1bf8-47c4-b4d3-67fe1e7f0250.filesusr.com/ugd/33ab24_e0ecca92eac84af3965bbc5fd40cf741.pdf?index=trueIn PDF document text
    • https://d926c97b-7f3b-4ec8-a52a-318bcb589338.filesusr.com/ugd/120f26_84c872c6e010437a8018a82f03cb1a48.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/how_to_unfreeze_samsung_ice_maker.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF982 5416 bytes
SHA-256: d1bc0cae518631c11514550bfc0b9f3eebd81a9b4da1e68ae6982ce2ba07f38e
font_01_sfnt_off00010bf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BF6 12120 bytes
SHA-256: d0f5fdf32ab12f53f487b3aad642cee4881d39a0c1ed5e2aa3e3d369f654b9b0
font_02_sfnt_off0001341b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1341B 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71