Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b7445cc57da6197…

MALICIOUS

PDF

94.6 KB Created: 2021-03-31 15:56:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3573f77c946ba011c1ea0641b179c5b1 SHA-1: 700ff26c601918917e0b73bafddc49a2ab7abe0f SHA-256: 8b7445cc57da619741289777c61fc56a4126f19b8d20626a8da9535c63126aa7
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 common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

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/wix?keyword=voigtlander+vito+br
    • http://kunewalijaxuna.getenjoyment.net/guvotejonixagu.pdf
    • http://piwofoterif.sportsontheweb.net/basta_game_in_english.pdf
    • https://cdn.sqhk.co/dafisuwikib/f4hhOjj/shipwrecked_mini_golf_and_ice_cream.pdf
    • https://cdn.sqhk.co/givujelised/nvvqjf3/dudorizamobizanilara.pdf
    • https://cdn.sqhk.co/sileluzorupo/dhahc8A/female_mannequin_dress_form_torso_dressmaker_stand_display.pdf
    • https://cdn.sqhk.co/buzovegom/LjfKahh/87081983976.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/15e5e438-067a-4a0a-964c-daabc1ab5079/2621562903.pdf
    • https://s3.amazonaws.com/kujapomib/c._a._t._s_apk.pdf
    • https://s3.amazonaws.com/gulapore/femobopa.pdf
    • https://uploads.strikinglycdn.com/files/85a43e4c-b678-46bb-a0a9-8968b2106fb8/vujebekumazopunol.pdf
    • https://s3.amazonaws.com/bepukuba/vivopobolusawozakolajow.pdf
    • http://pamagidobiguvi.rf.gd/86607719725.pdf
    • https://uploads.strikinglycdn.com/files/9c9945e3-1286-4a1d-b33e-763ad70b5e4d/44050998038.pdf
    • https://s3.amazonaws.com/lixasifasi/photo_background_remover.pdf
    • https://uploads.strikinglycdn.com/files/a2353661-673f-4254-8033-0114973247f0/juego_de_preguntas_hombres_vs_mujeres.pdf
    • https://s3.amazonaws.com/lukepepe/44686821457.pdf
    • http://figapow.epizy.com/a_to_z_alphabet_chart_with_pictures.pdf
    • https://s3.amazonaws.com/jobavo/bodoni_72_oldstyle_book_font.pdf
    • https://s3.amazonaws.com/folexapurilowe/tecnologia_da_informao_salario_2017.pdf
    • https://uploads.strikinglycdn.com/files/94183ffa-1f91-487b-a50d-d4cf975317bf/76873772715.pdf
    • https://s3.amazonaws.com/dinigugaxej/gapilikeje.pdf
    • http://tajiroxajesolut.atwebpages.com/23963253014.pdf
    • https://s3.amazonaws.com/sorogamat/book_cover_maker_by_desygner_apk.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_off00013468.bin
6c16c4324a91ef2e76e3e9a1f1e8ab76ff4180fbae5a885248af0ec93e1fea22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13468 4980 bytes
font_01_sfnt_off0001456e.bin
9dd324835453695cab80ef070f6e72f7a1ad8f57b413173800ceee5e60b655e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1456E 11700 bytes

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