Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d4e7eb3ccd9ba9…

MALICIOUS

PDF

80.6 KB Created: 2021-09-09 13:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 2f768e86cdc0624fd527e47ef35d641c SHA-1: cdf58354ab2a2adf1cf0c508b86e83836a0c9fdf SHA-256: f0d4e7eb3ccd9ba9875f59078b51020238567f14b91f8ca61d3068d8f237872d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 http://pro-group.ru/userfiles/files/81720934380.pdf In PDF document text
    • http://kapfenberger-schuetzenverein.at/userfiles/file/sutiwewiwavawupiposaxadur.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/161379b1e5c3b3---lonewigezapilineleta.pdfIn PDF document text
    • http://bluecreator.biz/ckfinder/userfiles/files/fonomapojipege.pdfIn PDF document text
    • http://giovanninociti.com/userfiles/files/nomutopixiwuvelowanek.pdfIn PDF document text
    • http://bjxbw.cn/userfiles/file/pevod.pdfIn PDF document text
    • https://telewebmarketing.com/FCKeditor/file/tagikejewusirowerigeji.pdfIn PDF document text
    • http://razzledazzleevents.in/userfiles/file/51679011790.pdfIn PDF document text
    • http://carrasvilla.es/uploads/files/7861211502.pdfIn PDF document text
    • http://studiotecnicobonoli.com/userfiles/files/10034679785.pdfIn PDF document text
    • https://coherence.cz/userfiles/file/75744872468.pdfIn PDF document text
    • https://khanoomhoteli.com/basefile/khanoomhotelicom/files/xexawedotutadu.pdfIn PDF document text
    • http://dlshixiang.com.cn/ckfinder/userfiles/files/42910387295.pdfIn PDF document text
    • https://rugsinc.in/UserFiles/files/87872454141.pdfIn PDF document text
    • http://soupworld.de/upload/file/39779599994.pdfIn PDF document text
    • http://webs123.com/userfiles/file/jiripe.pdfIn PDF document text
    • http://acril.ru/ufiles/files/xejaruve.pdfIn PDF document text
    • http://dblbtech.com/userfiles/file/nupesotomasexesa.pdfIn PDF document text
    • http://exima.kr/userData/board/file/39706795249.pdfIn PDF document text
    • http://wronba.com/uploads/wysiwyg/file/56060410338.pdfIn PDF document text
    • http://pmke.cz/pictures/files/50427770996.pdfIn PDF document text
    • http://fszhenjia.com/upfolder/e/files/20210908070717.pdfIn PDF document text
    • http://aptekarynek.pl/zdjecia/fck/file/59499195640.pdfIn PDF document text
    • https://gencatakan.com/upload/file/ritiponazavinofubofemok.pdfIn PDF document text
    • http://pc75.net/upfiles/file/1631037754.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=top+best+emulator+for+low+end+pcPDF link annotation
    • 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_off0000d6a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC0 10976 bytes
SHA-256: 47581a82d887a4d572f5abcc5c2217a972725f79833b7664fc8a526b7a74b170
font_02_sfnt_off00010815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10815 17276 bytes
SHA-256: 86bf9768369cb57267c6b14f0af0f17e5c4b89a7db4d826acbd40f16409b632b

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