Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d352ea379568730…

MALICIOUS

PDF

79.0 KB Created: 2021-03-16 21:18:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 4ebdc792ee5ac4d2080f22c49be36370 SHA-1: 0080cfdcec873d7a8df36509e3889bdf8fa55256 SHA-256: 1d352ea379568730a975f85b2d07aa1e4207393a8312d8aa5281c5f95b9bc4cf
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a phishing page disguised as a tax form. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the phishing lure suggest an attempt to trick users into providing sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xajibur.ru/strik?utm_term=how+do+i+get+form+ssa-1099 PDF link annotation
    • https://zamivevi.weebly.com/uploads/1/3/1/4/131437513/wibimepusukopifujoz.pdfIn PDF document text
    • https://tatazopizen.weebly.com/uploads/1/3/1/1/131163492/buxarigude.pdfIn PDF document text
    • https://rereviraret.weebly.com/uploads/1/3/4/5/134512362/8280629.pdfIn PDF document text
    • https://zuripiri.weebly.com/uploads/1/3/1/8/131856797/riwuxa.pdfIn PDF document text
    • https://butegipabozu.weebly.com/uploads/1/3/4/2/134235803/3261064.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pozonijegexovu.epizy.com/92348301859.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/cartelera_cinemex_plaza_reforma_nuevo_laredo.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/74015814070.pdfIn PDF document text
    • http://dubixifixi.epizy.com/nigerian_worship_songs_piano_chords.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/869a6b99-820e-4ef8-b3a9-3653cf3a5631/how_to_boost_your_mobile_signal_at_home.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/33645356938.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/seminar_report_on_maglev_train_ppt.pdfIn PDF document text
    • http://pofuwumol.rf.gd/stand_up_translate_spanish.pdfIn PDF document text
    • http://wixesikive.epizy.com/luliluxamezewadik.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/guided_meditation_for_healing_back_pain.pdfIn PDF document text
    • http://sivutesafukim.rf.gd/2842010474.pdfIn PDF document text
    • http://zelixedamaxux.rf.gd/89136846920.pdfIn PDF document text
    • http://tozopovudot.epizy.com/piece_of_cake_6e.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/arcswat_for_arcgis_10._3_free.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/checklist_format_for_housekeeping_hotel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75a6db0e-44d6-4747-8bca-3f611207e383/58558665883.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_off0000f452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF452 5632 bytes
SHA-256: 112d152bbf192e0b8c4ccb3329564f6476a44b5e6c8d11049fb2fc9d44e70055
font_01_sfnt_off00010781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10781 11556 bytes
SHA-256: f643713cbab2e45b12dbc1367afc4e742b97cd9886cecbb401478a6b5057b73c

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