Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8c0dd0baa69b295…

MALICIOUS

PDF

88.8 KB Created: 2021-03-30 12:11:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1883f9fdbe7a08f575d2f03cc43d73ef SHA-1: 9b8dbe0b94704370b4e8e09f19441056d5ab2b65 SHA-256: d8c0dd0baa69b29546ee472e27d4acc2b4facd85d93dda9e37c9e8eeb2f9585f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/aws?utm_term=how+do+i+reset+my+uconnect+2015+ram
    • https://cdn.sqhk.co/xivomojuf/gdhjjgj/bumiwafidavasutifutizuvi.pdf
    • https://cdn.sqhk.co/razotefo/jj5V1ig/azure_sql_dw_performance_tuning.pdf
    • https://cdn.sqhk.co/nanijamu/Ohdiaji/32758940233.pdf
    • http://lipexifinidoda.scienceontheweb.net/percy_bysshe_shelley_ozymandias.pdf
    • https://cdn.sqhk.co/tixukiko/kijiiMm/garotamenasapiravefavo.pdf
    • http://wijetaz.mypressonline.com/what_is_better_website_builder_or_wordpress.pdf
    • http://xagugudel.sportsontheweb.net/bufinemuf.pdf
    • http://xasedogamif.mypressonline.com/kison.pdf
    • http://beririka.scienceontheweb.net/anatomia_de_camelidos_sudamericanos.pdf
    • http://jijezegovevogav.22web.org/josilogoxuvumakezobife.pdf
    • http://lomuwugevona.getenjoyment.net/bologefudibu.pdf
    • http://nafaguxidu.iblogger.org/35596248534.pdf
    • http://kemikavar.mypressonline.com/blue_book_aiesec.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://4bd9ed84-c80b-4837-bb2f-b1353ebfd8aa.filesusr.com/ugd/5a1791_23bd1ab701134afa82a770c78a949499.pdf?index=true
    • http://rotufixijisadi.onlinewebshop.net/62333985226.pdf
    • https://ac4cd5cf-e861-4b1b-a585-e47049f737a6.filesusr.com/ugd/843280_25bbd18c63124f7f9704a7db6d3a49bd.pdf?index=true
    • https://f4e740b0-69d0-4d5c-a0c7-362dc6b2ad6d.filesusr.com/ugd/0356fc_14f09dc2dd334b1fa6105b574b69239f.pdf?index=true
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_064900ea285d4292a1d154436b121f8d.pdf?index=true
    • https://4192d618-ecd7-4808-8485-efd4d6773ded.filesusr.com/ugd/17a5db_a1a6e8bcf1bd419e9975a603edb2ddc2.pdf?index=true
    • https://044ec7df-721b-4788-b209-87474a3fcb06.filesusr.com/ugd/60ffa2_11b2953af306411aa892359ef8f69d89.pdf?index=true
    • http://domuromu.atwebpages.com/bunerorijesuribet.pdf
    • https://ef5e9b3f-1a8e-4c79-9b60-34b8f8133c96.filesusr.com/ugd/18574e_4e62366c803b4a02820092dfc822142b.pdf?index=true
    • http://gunubaxerilol.epizy.com/kitchenaid_stand_mixer_blueberry.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a45.bin
2e48473779523761fee5ef54380ed4734d72e80396f49dee085318d32d8920d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A45 5660 bytes
font_01_sfnt_off00012d92.bin
87a04c31a177193b25b003cc65bbf3c1de0addb56e58fba7016cef8c8baac611		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D92 11336 bytes

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