Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6c944da55ca8735…

MALICIOUS

PDF

70.7 KB Created: 2021-09-14 07:13:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 266a2f63688f76c59e6bec1da981e1b8 SHA-1: 98532193630074c7849aad731caee03a2a15bff2 SHA-256: a6c944da55ca8735affc423a454c6037921b665ecf8d06274c3d62f1534a5230
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

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://krisoc.ru/uplcv?utm_term=pokemon+go+mod+menu+ios PDF link annotation
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137ba0936151---dasimusunugo.pdfIn PDF document text
    • http://crmloccitanecr.com/campannas/file/nejexusalav.pdfIn PDF document text
    • https://terlickodds.cz/www/www/fckphotos/file/sidetapagoresutojiteval.pdfIn PDF document text
    • http://misterholidaysanprisco.it/userfiles/files/lupomenukizuzapufekadamef.pdfIn PDF document text
    • https://seedcambodia.org/htdocs/cljr/data/files/sinavebusez.pdfIn PDF document text
    • http://aitrans.org/UploadFile/file/F1202109011007189223.pdfIn PDF document text
    • http://ahjygjg.com/upload_fck/file/2021-9-11/20210911200523972886.pdfIn PDF document text
    • https://nurdagihaber.com/resimler/files/93971941217.pdfIn PDF document text
    • http://www.diplomat2014.ru/ckfinder/userfiles/files/xutafozezotigopupowukixu.pdfIn PDF document text
    • http://wojno-stal.pl/pliki/file/katizerelofotimexalupow.pdfIn PDF document text
    • http://5thaveseniors.org/userfiles/file/dixinemosuxil.pdfIn PDF document text
    • http://auxerretv.com/content/public/file/97189201841.pdfIn PDF document text
    • http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/88946565267.pdfIn PDF document text
    • http://fulns.com/uploadfile/fckedit/file/16315747317wca.pdfIn PDF document text
    • http://iamsong.vn/uploads/files/33261840101.pdfIn PDF document text
    • http://girc.ncue.edu.tw/ckfinder/ckfiles/files/bajoguwoguto.pdfIn PDF document text
    • https://luiginoiobbi.com/userfiles/file/kejewilipufukuleginesewev.pdfIn PDF document text
    • https://wedding-photos.cz/userfiles/file/51959273878.pdfIn PDF document text
    • https://joinvita.com/neu/userfiles/file/nevowabosokirukel.pdfIn PDF document text
    • http://ifaistos.reality.gr/~triantaf/images/file/jerakulifajemaruriwosu.pdfIn PDF document text
    • https://pilot-nav.com/ckfinder/userfiles/files/36059681835.pdfIn PDF document text
    • https://timminsrenovations.ca/file/GV4ujA9qZ4v0iuza.pdfIn PDF document text
    • https://varida-tech.com/ckfinder/userfiles/files/17089551987.pdfIn PDF document text
    • http://worldcar.jp/userfiles/files/tigatujutagidoxodeta.pdfIn PDF document text
    • http://thetestmag.com/userfiles/files/zotozasevi.pdfIn PDF document text
    • http://www.startservis.sk/novy/ckfinder/userfiles/files/sulizuzubamobuk.pdfIn PDF document text
    • http://cluster006.ovh.net/~greeters/be/ckfinder/userfiles/files/83668518227.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_off0000b74b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB74B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cf62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF62 10376 bytes
SHA-256: 11d4d78fa62be29822c9b76d8107a8ebc47cdd2d8c8d3ad381d432e6dc34668d
font_02_sfnt_off0000e69a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69A 15244 bytes
SHA-256: 609dd4811499dcb8be68769bbae2e9eae59f0d13ddb8b2b1c613ade68b821dc4

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