Malicious PDF — malware analysis report

Static analysis result for SHA-256 1547340c86089702…

MALICIOUS

PDF

87.6 KB Created: 2021-09-18 09:06:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 19995f2b2937266948d273dd4ced8005 SHA-1: 4f60c746ea1a2c59f4b64e29bfadb7f30fe7ce6d SHA-256: 1547340c8608970229c1a25ab0b3ea1534f30d5a18010e8d08cbe0a4f8c5fec2
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was identified as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing lure. The PDF structure and embedded URLs are consistent with attempts to redirect users to malicious websites for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://allytemp.ru/uplcv?utm_term=come+pulire+cache+android PDF link annotation
    • https://www.tri-or.fr/tri-or/ckfinder/userfilesfiles/30335815585.pdfIn PDF document text
    • http://np-laser.com/upload_fck/file/2021-9-6/20210906072710690553.pdfIn PDF document text
    • http://xn--9n2bn9mz3aba29g44r4o0a.kr/fckeditor/userfiles/image/bopovoras.pdfIn PDF document text
    • https://sokole-tps.pl/userfiles/file/49528926964.pdfIn PDF document text
    • http://rebeccafantarchitetto.it/userfiles/files/benutivegigisasitiwemogor.pdfIn PDF document text
    • https://tvmreza.tv/ckfinder/userfiles/files/tabepibisurujoxizavoze.pdfIn PDF document text
    • http://lemma-studio.pl/userfiles/file/69713725317.pdfIn PDF document text
    • https://thebottombillion.org/business_school/uploads/file/liziguxipajufuk.pdfIn PDF document text
    • http://cosmik-kinoteatr.ru/sadm_files/15765034457.pdfIn PDF document text
    • http://isystemlab.com/admin/ckfinder/userfiles/files/vumetagenotasovofez.pdfIn PDF document text
    • http://dungcucaytrong.com/images/files/modamigorawu.pdfIn PDF document text
    • http://taxilitomerice.cz/ckfinder/userfiles/files/dumesafoxevavetorokalo.pdfIn PDF document text
    • http://moestuinwebshop.nl/userfiles/file/pasipodonuful.pdfIn PDF document text
    • http://pibar.tw/uploads/files/202109020505029987.pdfIn PDF document text
    • http://yanartekstil.com/firma/files/19196029307.pdfIn PDF document text
    • https://quatcongnghieput.com/uploads/files/189768898.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/7415f26a0cf56b13391bbb7b6aafba8b/rixafi.pdfIn PDF document text
    • https://breedlife.com/upload/files/vunogexobelaxerop.pdfIn PDF document text
    • https://dubaimotorcycletours.dubaimotorhomerentals.com/uploaded_images/files/xakigovabexiv.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/3723661087.pdfIn PDF document text
    • https://icoachyou.biz/images/ckeditor/files/47938936603.pdfIn PDF document text
    • http://sitoad.com/bbqjoekey/files/202109072309182435.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f22a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010a41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A41 10644 bytes
SHA-256: 2a673c1bc21e33efcbb970ae7f1cc3589f7972301f02e4862faedfa74b008ced
font_02_sfnt_off00012250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12250 17868 bytes
SHA-256: 7e8edc45b4925799b112ca0b61d131d57448a3ac75beba7c72d4aba5803c0af7

Open this report in the interactive analyzer, or submit your own file for analysis.