Malicious PDF — malware analysis report

Static analysis result for SHA-256 396c7a9e98630613…

MALICIOUS

PDF

81.9 KB Created: 2021-04-30 23:34:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 406280edb973a1a54b2be05dbb99364c SHA-1: a91bb07d898e9a18a0e80a24fe9dca2407a21e89 SHA-256: 396c7a9e98630613512b45cf04348df6fb884b06b4989eb4fe189e4367b3188f
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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=ipod+mini+case+for+apple+watch
    • http://idealsit.space/29531377101yichi.pdf
    • http://front-glass.space/easy_chocolate_cake_recipe_without_egg_and_ovenk35m4.pdf
    • http://disozire.mygamesonline.org/fabodova.pdf
    • http://madewithsunshine.com/purimokadurekixubaxixe2zhff.pdf
    • http://marafonsport.site/aadhaar_card_in448vt.pdf
    • http://zubiki.top/onan_diesel_generator_service_manualu3s4i.pdf
    • http://xumugawejal.scienceontheweb.net/8342886169.pdf
    • http://flowerport.market/76014175374axt9a.pdf
    • http://remont-kholodilnikov.website/moero_crystal_trophy_guidewbio8.pdf
    • http://karaulovlife.site/4601853573j2kjg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/jupudizadid/9113459339.pdf
    • https://uploads.strikinglycdn.com/files/29f3420b-3fae-4e3a-8388-101de9b3947e/33376305031.pdf
    • https://s3.amazonaws.com/fofeguj/c_r_p_f_training_video.pdf
    • https://uploads.strikinglycdn.com/files/436a3a27-2486-44bf-bb0c-6cbbaff6ffcf/18798799283.pdf
    • http://kepefemez.epizy.com/bio_data_sample.pdf
    • https://uploads.strikinglycdn.com/files/905aca8c-80fe-499a-82a3-60cb65c7888e/74857994272.pdf
    • https://s3.amazonaws.com/tufujifinobiro/40767467956.pdf
    • http://wisijogasego.epizy.com/973816443.pdf
    • http://gumusimigogasuz.onlinewebshop.net/doduwu.pdf
    • https://uploads.strikinglycdn.com/files/2de76868-21ee-4e7c-bde1-af3c38f4e5ce/74710184086.pdf
    • http://nodonukebonona.epizy.com/wajamele.pdf
    • https://s3.amazonaws.com/buwosevax/somewhere_over_the_rainbow_sheet_music_beginner.pdf
    • https://uploads.strikinglycdn.com/files/208c9dae-2316-4431-a0d0-1698b16c203b/mustang_owners_club_of_southeastern_michigan.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_off0000f3f7.bin
ca09d3bc52ca5596e9ff3a03877a5395bf396012a6a8acdee551291edcc27624		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F7 5212 bytes
font_01_sfnt_off00010586.bin
d8370520c644f39ebb03937450141763b8448107e813552f702a002f51d9fb8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10586 11280 bytes
font_02_sfnt_off00012c08.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C08 4324 bytes

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