Malicious PDF — malware analysis report

Static analysis result for SHA-256 2488ffd7cda95b42…

MALICIOUS

PDF

198.6 KB Created: 2021-03-06 19:04:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 8a12e8153a307f111b38dd0e6475eea4 SHA-1: fc155c33d6d29c36c6b24c274b7312852ab98c5a SHA-256: 2488ffd7cda95b42186aa8212dff6d879595b5699e1351bc414c8c6e0ea85eaf
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. An external URI pointing to 'https://xezojetit.ru/strik' was extracted, suggesting a phishing or malware distribution attempt. While no scripts were directly extracted, the PDF structure and embedded URI are indicative of a malicious document designed to redirect users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9878

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/strik?utm_term=samsung+hw-hm45c+review+cnet PDF link annotation
    • http://rubisteq.online/45865655885n0d40.pdfIn PDF document text
    • http://xofofumireke.mypressonline.com/dowabebisuridijodab.pdfIn PDF document text
    • http://fonudesuwobulud.mygamesonline.org/stihl_hs45_petrol_hedge_trimmer_reviews.pdfIn PDF document text
    • http://zatoxuvisovapuf.sportsontheweb.net/63483657168.pdfIn PDF document text
    • http://myyshooop227.site/what_is_the_difference_between_agile_scrum_and_kanban4kupz.pdfIn PDF document text
    • http://gatowixipeba.mywebcommunity.org/84541939738.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zusaxadixuxot.myartsonline.com/joxufiporibepug.pdfIn PDF document text
    • http://nakeviw.myartsonline.com/wuladedoxuxixevufuxevij.pdfIn PDF document text
    • http://rukosivujuxu.atwebpages.com/asp.net_mvc_projects_with_source_code_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/48667253894.pdfIn PDF document text
    • http://xiwaresijo.epizy.com/pijutabelipevomo.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/22190329458.pdfIn PDF document text
    • http://dafiwogi.rf.gd/chiang_mai_local_guide.pdfIn PDF document text
    • http://vutagefen.epizy.com/sql_payloads_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/writing_papers_in_the_biological_sciences_5th_edition_free.pdfIn PDF document text
    • https://f6ce3cfb-f922-470c-9e0e-eaf724001b0e.filesusr.com/ugd/defcb2_59c9249ddb504a62a05521c723ede33e.pdf?index=trueIn PDF document text
    • https://584abdf6-e408-48d3-a53c-4313a8f82471.filesusr.com/ugd/18ee90_a82b3682b8144ce59a6c4a5d904483c0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/zavofiwape.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000286c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x286C6 6784 bytes
SHA-256: e997c2925f725847d2c910a554350a36886e55b3e92fa773a39d894c6e64f5d8
font_01_sfnt_off00029dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29DC6 5680 bytes
SHA-256: a435e5c5f0424d70db051af29d58e0e6a9fa7e6af52bc861388bdd3a50b09a94
font_02_sfnt_off0002b11e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B11E 18408 bytes
SHA-256: 036ed2d56a50a3244a18f5881f4821ad602d958b5fb0f2695cc30425548e6836
font_03_sfnt_off0002e66f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E66F 16404 bytes
SHA-256: 9b855188887cdd9bd82e6f514f2d614b44a59b31c6630c08fd2d2f917c543fee
font_04_sfnt_off0002fc99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC99 6064 bytes
SHA-256: 608da7165703b902d85db407fb596c9c9243b781f128346af0253b6c483847d8

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