Malicious PDF — malware analysis report

Static analysis result for SHA-256 69cb49b15e19c180…

MALICIOUS

PDF

69.3 KB Created: 2021-09-26 15:02:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 015c6417e227df38670ededf6617b6bb SHA-1: 36bf754aed6215603d69118b993fb679361f55bc SHA-256: 69cb49b15e19c180af036897d42c7df3b8023e79938be305865f14f72588f007
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one heuristic specifically identifying it as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and external links suggest it is used to redirect users to potentially malicious websites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://pixomot.ru/uplcv?utm_term=active+physics+textbook+answers+pdf PDF link annotation
    • http://circuitoinsulargc.com/documentos/file/71027070816.pdfIn PDF document text
    • https://iqmuseum.mn/uploads/files/99752364864.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/70124892123.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/202192158451822.pdfIn PDF document text
    • https://vatlieuchongnong.baohohoanglong.com/userfiles/file/fexebivosezanegulapakegi.pdfIn PDF document text
    • http://marcelponjee.nl/ponjeefiles/file/bosekakodoketomas.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/rewoxekurotifuwinixuk.pdfIn PDF document text
    • http://newtrichur.com/userfiles/file/6514003454.pdfIn PDF document text
    • https://art-gallery.mn/uploads/files/wilizidovofo.pdfIn PDF document text
    • https://www.hmgfinance.com/ckfinder/userfiles/files/betened.pdfIn PDF document text
    • http://cyclad.org/UserFiles/file/24562674280.pdfIn PDF document text
    • http://arci-mp.fr/admin/File/29087629738.pdfIn PDF document text
    • http://thaihotelsale.com/FileData/ckfinder/files/20210914_B072E131829DE46B.pdfIn PDF document text
    • https://kaxtongroup.com/home5/maxconne/public_html/kaxtongroup/assets/images/newspostimages/files/28916654337.pdfIn PDF document text
    • http://maxidmum.com/images/upload/fck/file/nuwaveked.pdfIn PDF document text
    • http://slhospital.com/upload/fckeditor/file/34516738676.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/b5be76cfc4bf8b908e86b2579196fadf/bumazom.pdfIn PDF document text
    • http://gysanya.com/upload/file/210907041458611373zisp24iu7oc7.pdfIn PDF document text
    • http://hflbdq.com/uploads/file/261212332602.pdfIn PDF document text
    • https://cobaltinc.org/userfiles/file/29517825896.pdfIn PDF document text
    • https://nslogisticservice.com/userfiles/files/65810531255.pdfIn PDF document text
    • https://5udua.com/contents/files/79844607410.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/70057390813.pdfIn PDF document text
    • https://vicotelecom.vn/static/source/images/file/zasav.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_off0000afd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFD9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c7f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F0 11252 bytes
SHA-256: d6956b4158f8e13b3e552eb10042aa4d958f77fbe6d618d966db1d00a76cb825
font_02_sfnt_off0000e23c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23C 14864 bytes
SHA-256: 37f58bef6ca3ef8e6ec0ae2dd57d7d1915b8928ada735e862c2582b481a0c2e5

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