Malicious PDF — malware analysis report

Static analysis result for SHA-256 29676fdb579024ba…

MALICIOUS

PDF

64.3 KB Created: 2021-03-12 20:16:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76b9a05a5916a3719328ca705593c47a SHA-1: 44c0b756daa4bf4006d739eee80d0ffb03027b9e SHA-256: 29676fdb579024ba49f2ca1dca4a07118690d2f79087e4a480fee6a848cf350d
154 Risk Score

Malware Insights

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

The PDF document contains numerous external links, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the presence of embedded URLs and the PDF structure suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9691

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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/123?utm_term=vidmate+software+free++for+windows+8.+1
    • https://bewodopogogubak.weebly.com/uploads/1/3/4/8/134886142/gepimalukolenoj-gujojan-vilotowe.pdf
    • https://vamubediva.weebly.com/uploads/1/3/4/9/134901044/4acd86e.pdf
    • https://vabadagijuruka.weebly.com/uploads/1/3/1/8/131856539/pevijigefepuj_timokidosegasut_nereko_wemorekuleped.pdf
    • https://pukakiliratof.weebly.com/uploads/1/3/4/7/134768090/508a5e5379.pdf
    • https://finuvowevemez.weebly.com/uploads/1/3/5/3/135397693/ad9e37be9f.pdf
    • https://ranibifuvif.weebly.com/uploads/1/3/1/3/131381542/4874410.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dbebaee8-bbd2-48be-8111-285e97c489ba/selimivixa.pdf
    • https://113c517c-d7b0-4b36-99d7-6722bcb7ef36.filesusr.com/ugd/8e66a5_3592a6e93e4241c99abd1cf5af77f386.pdf?index=true
    • https://b00f38ea-0d13-4519-ab0f-1253f0d03ca0.filesusr.com/ugd/289c5e_db500b7f70cb4b26a6aaac56ba49d81b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2542f337-262e-4343-8b11-f1c59b5fc61d/dr_seuss_board_books_set.pdf
    • https://c140f178-ee45-427e-91fe-a3c5f821f67e.filesusr.com/ugd/ebc5f9_f37183a882194114b190026ff16273a9.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e293cf45-b0ec-49e4-837a-a2f3a8d15789/jenn_air_stove_repair.pdf
    • https://s3.amazonaws.com/baxunaf/highlight_duplicate_google_sheets.pdf
    • https://s3.amazonaws.com/sefipa/garfish_report_port_phillip_bay.pdf
    • https://uploads.strikinglycdn.com/files/b0c230eb-cde0-4ea2-9574-972627eddd24/lewuzurenuwijeja.pdf
    • https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_379e84b710304f4abb4aea807aec2880.pdf?index=true
    • https://uploads.strikinglycdn.com/files/46003bab-b7f3-4def-9fec-42b4ae4db387/megefaka.pdf
    • https://uploads.strikinglycdn.com/files/93b0766e-ec76-4f6e-ac4a-fc0163ebe0f8/sparknotes_animal_farm_chapter_7_and_8.pdf
    • https://uploads.strikinglycdn.com/files/93a52d85-6f74-49f5-8779-088bdd65ff64/fifty_shades_of_grey_full_movie_fb.pdf
    • https://uploads.strikinglycdn.com/files/751e27ca-88b8-4e46-a6ff-2f02500109b7/jig_2_redux_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/592f1e1f-70d2-45c2-8784-bb04af9cd48f/wapupi.pdf
    • https://uploads.strikinglycdn.com/files/b1361cae-9100-401e-bc95-823ffc4cd09e/pokabototirolefexofiv.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eabe.bin
40ca822c9a9f0031bb756e77792527dcb5850ebc38128552c61ef160ec7261f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEABE 5356 bytes

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