Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdd3d974a6db8ba0…

MALICIOUS

PDF

76.5 KB Created: 2021-04-07 06:40:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 031435d9b1e4cedc1130ae1ac673c2ee SHA-1: e4a3aca26c075e18e2fca413a9686200bb703dbc SHA-256: cdd3d974a6db8ba092c82a58f362138cbfad17bcdc4d7c1ee7198c75999776d9
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains text related to a search query, and an external URI points to a suspicious domain, likely a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://seumenha.ru/strik?utm_term=where+is+nespresso+headquarters
    • https://static.s123-cdn-static.com/uploads/4490539/normal_5ff3f1a6bc127.pdf
    • https://static.s123-cdn-static.com/uploads/4449777/normal_5fccfb0284f4f.pdf
    • http://rubyshup.space/53479537167lm6xv.pdf
    • https://static.s123-cdn-static.com/uploads/4481156/normal_5fcebe334e055.pdf
    • https://static.s123-cdn-static.com/uploads/4421477/normal_5fc6ab00ac272.pdf
    • http://my-favshop.online/beckett_card_grading_formet7nl.pdf
    • https://cdn-cms.f-static.net/uploads/4393751/normal_6056574fa3436.pdf
    • https://cdn-cms.f-static.net/uploads/4485587/normal_5fda2716f10f5.pdf
    • https://cdn.sqhk.co/gufemazibafi/9hhicjb/10474052926.pdf
    • https://cdn.sqhk.co/povuguzuloga/7qsiegi/9601588521.pdf
    • https://cdn.sqhk.co/suxunuke/VhiiiaW/48247584387.pdf
    • http://tcerkovniekupola.space/elementor_block_templates_free6yjza.pdf
    • https://cdn-cms.f-static.net/uploads/4384143/normal_602cef9dd70e5.pdf
    • https://cdn.sqhk.co/toromerepowa/he6gj4R/koxitadusazas.pdf
    • https://cdn-cms.f-static.net/uploads/4414167/normal_604a5b7882d09.pdf
    • https://static.s123-cdn-static.com/uploads/4377391/normal_5ff814fac5c48.pdf
    • http://keep-travel.com/15950623359nb8xm.pdf
    • https://cdn.sqhk.co/lipetebo/Jrhjhgi/plants_vs_zombies_android_free_download.pdf
    • https://cdn-cms.f-static.net/uploads/4383806/normal_60240f228f303.pdf
    • http://atomyimperial.ru/a_woman_in_berlin_novelprn0f.pdf
    • https://cdn.sqhk.co/sinemajud/jiia24f/bunirufiwisosoxukapawalar.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/povelenavuviw/53050397698.pdf
    • https://s3.amazonaws.com/tonemakopinibem/79040377550.pdf
    • https://s3.amazonaws.com/nolarifaforuxop/apa_itu_appendix_vermiformis.pdf
    • https://s3.amazonaws.com/xulepiwa/87099653389.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dee3.bin
3bb3f5976c1e124854393179b6d27a831207991f749168066ac1e0ac7abd090d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE3 5036 bytes
font_01_sfnt_off0000eff6.bin
2e1b056910d28e55618e38041b1ccc49662addc82447bb311079a6926ca8c54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF6 11356 bytes
font_02_sfnt_off0001164b.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1164B 4324 bytes

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