Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb58fe697de05be3…

MALICIOUS

PDF

69.2 KB Created: 2021-09-11 23:30:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: ea2ca8ed652d4d1e3bc2ff9a0dbe77c1 SHA-1: 23de711553612e74272bff8c479691336096da3a SHA-256: eb58fe697de05be3516d451c9527cc21f40243ee92304a938c833b099d73a34f
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains numerous external URLs, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or malware distribution campaign. The PDF structure and embedded URLs indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.2445

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://oniceh.ru/uplcv?utm_term=completing+the+square+practice+problems+and+answers PDF link annotation
    • http://citygclub.com/ckupload/files/12601177148.pdfIn PDF document text
    • http://terwaarde.be/ckfinder/userfiles/files/bisuwujeba.pdfIn PDF document text
    • http://jgbt.us/pds/userfiles/files/66454158130.pdfIn PDF document text
    • https://motty-etai-sharon.com/files/files/luginaretodo.pdfIn PDF document text
    • https://knurussian.kr/DATA/upload/files/202109101459249516.pdfIn PDF document text
    • https://alkirbilaw.com/userfiles/files/denedesagoxesovefuva.pdfIn PDF document text
    • http://ozkayalartrans.com/userfiles/file/momazo.pdfIn PDF document text
    • http://webbyshoe.com/fckeditor/userfiles/file/nirasa.pdfIn PDF document text
    • http://client.diffuse.info/files/vevovo.pdfIn PDF document text
    • http://ibrahimalsada.com/pics/file/52872290435.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/719470f974da79f8013a81a28d4d4124/35335570777.pdfIn PDF document text
    • http://qamsar.org/userfiles/files/35513586025.pdfIn PDF document text
    • http://togclick.com/media/userFckfiles/file/vizixamanofasuzutat.pdfIn PDF document text
    • https://toppelletmachine.com/d/files/rorevexunimijevik.pdfIn PDF document text
    • https://www.cdsale.org.au/application/third_party/ckfinder/userfiles/files/23877025274.pdfIn PDF document text
    • http://hepiran.com/cache/fck_files/file/97752533581.pdfIn PDF document text
    • http://alvitraders.com/files/12295860170.pdfIn PDF document text
    • https://myclubowners.com/userfiles/files/9704478910.pdfIn PDF document text
    • https://gdaniec.com/upload/files/diromekekugitatipimudo.pdfIn PDF document text
    • http://benetworkingpro.com/ckfinder/userfiles/files/migiba.pdfIn PDF document text
    • http://quangcaovuanh.com/vietkiendo/upload/file/zajog.pdfIn PDF document text
    • https://anakmeong.com/contents/files/91627612962.pdfIn PDF document text
    • https://kfmaccounting.com/webroot/img/content/files/molukirevumodidigirirol.pdfIn PDF document text
    • http://hbaoge.com/upload/files/mereliza.pdfIn PDF document text
    • http://akademia-jedenastka.pl/zdjecia/fck/file/dorigatixa.pdfIn PDF document text
    • http://hoangle.vn/uploads/userfiles/file/59230786412.pdfIn PDF document text
    • http://bippex.com/filespath/files/20210907140727.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e9cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CF 11464 bytes
SHA-256: 60b82f31b546466605697ae7ce3381ee10827613eac4e93f59c14acd0bfa329b