Malicious PDF — malware analysis report

Static analysis result for SHA-256 fce0920266b55984…

MALICIOUS

PDF

74.2 KB Created: 2021-03-28 18:58:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: a16c4c904b3690f550d9fab8213842bc SHA-1: 2347e84292654aab675d834fc08d04aa1fff5edc SHA-256: fce0920266b55984334cdfc18f9767c2a939241b5752f8703bc3264208c667b2
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a malicious domain, likely intended to deliver a second-stage payload. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing lure disguised as a search result. No scripts were extracted, but the PDF structure itself facilitated the malicious URL delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://vilenefex.ru/strik?utm_term=what+does+the+number+3+mean+in+biblical+terms PDF link annotation
    • http://smirno.life/ruwikawusuzazisub261sx.pdfIn PDF document text
    • http://liketime.online/89457484843ty0sm.pdfIn PDF document text
    • http://romotogez.22web.org/tulajekijovuwafagil.pdfIn PDF document text
    • http://pujasaros.iblogger.org/jamb_biology_syllabus_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f43e1f3-9574-4fad-8047-592f22932b69/how_to_change_kali_linux_user_password.pdfIn PDF document text
    • http://lewiwosu.epizy.com/53489494165.pdfIn PDF document text
    • https://s3.amazonaws.com/gopifu/clinical_chemistry_and_laboratory_medicine_books.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/nalafuduguvabadaj.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/kupuwirijuxigeso.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/xigad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c117ae22-864e-4d35-85c9-b36bd399c58d/nasezosoxexirap.pdfIn PDF document text
    • http://jadigilotuziwir.rf.gd/nurimejemefoxo.pdfIn PDF document text
    • http://zulugeka.rf.gd/xafaz.pdfIn PDF document text
    • http://bumilamufitilu.epizy.com/aaj_tak_live_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/how_to_win_capsim_2020_reddit.pdfIn PDF document text
    • http://jenofabejuvokag.epizy.com/candy_crush_game_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/how_to_calculate_the_cash_flow_from_operating_activities.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/xotofajovowufoposufaroju.pdfIn PDF document text
    • http://varapotemutura.rf.gd/48196323631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1844ed2d-ef27-47e2-a370-6138971607bd/john_fraser_secondary_school.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/google_calendar_windows_8.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/95936812150.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f3614e5-7316-440a-b76d-d81f12c6380a/sujetorifetanidim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/046211ab-a244-4973-85a8-57b06a5300d2/zakulebe.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE327 5496 bytes
SHA-256: 728cd47652260a59f9019fbed370b59e3e1ee6d4aadc9c153e95c3d9b6c26872
font_01_sfnt_off0000f5b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B8 10372 bytes
SHA-256: ac175c60861eab24e32e5460ff6fb413721ee647e369bce5a02dec39d63c0af1

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