Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec2cf692609b265d…

MALICIOUS

PDF

82.3 KB Created: 2021-09-09 09:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 81ba355ea1f29521b34d1125d098ee8b SHA-1: 84e4deff96bdb3a01ff8d23e424b904f90ef9779 SHA-256: ec2cf692609b265d7477a3a25d752abce926dbe718387f5d999a73af2ffc87db
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for delivering malicious content or redirecting users to malicious websites. The presence of numerous external URIs and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate a phishing or malware distribution campaign. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 7

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://wastran.ru/uplcv?utm_term=show+saved+wifi+passwords+android PDF link annotation
    • http://theprojectmanagement.guru/cote_dor_import/admin/ckfinder/userfiles/files/kazibigatiruwipug.pdfIn PDF document text
    • https://ismart99.net/upload/files/lolisexinotavodigufifojed.pdfIn PDF document text
    • http://mgtuae.com/uploads/file/wemuvapeluvexodo.pdfIn PDF document text
    • http://tvoirostov.ru/ckfinder/userfiles/files/zodufege.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/161307b0208491---39879974989.pdfIn PDF document text
    • http://jfac.kr/ckfinder/userfiles/files/43534595869.pdfIn PDF document text
    • https://zoorichi.com/temp/fckeditor/file/devewetoguzukatelivu.pdfIn PDF document text
    • http://www.azurwelcomeservices.com/userfiles/file/50365688540.pdfIn PDF document text
    • http://rosritual.su/app/webroot/js/ckfinder/userfiles/files/28393189442.pdfIn PDF document text
    • http://americasbestwingspa.iorderfoods.com/uploads/files/xupakiberafigidel.pdfIn PDF document text
    • http://novosib-sport.ru/ckfinder/userfiles/files/91353527781.pdfIn PDF document text
    • http://duetsepolno.pl/userfiles/file/61251178033.pdfIn PDF document text
    • https://wtmasonry.com/ckfinder/userfiles/files/68251705202.pdfIn PDF document text
    • http://aerotherminsulation.com/userfiles/file/debajemalik.pdfIn PDF document text
    • http://24cvety.ru/upload/files/24504648289.pdfIn PDF document text
    • https://rosewoodcity.org/nbloom/fckuploads/file/78010261847.pdfIn PDF document text
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161366709d345f---55871807385.pdfIn PDF document text
    • https://ripedzn.com/app/webroot/files/fckeditor/file/visedefinevozodiwazo.pdfIn PDF document text
    • http://jcnjl.com/userfiles/files/85877991714.pdfIn PDF document text
    • http://daiichihr.com/uploads/news_file/45777973254.pdfIn PDF document text
    • http://vladjurnalist.ru/archive/file/nixedutalov.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_off0000d875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD875 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f08c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08C 10680 bytes
SHA-256: b2b855a3d322f60b590db0dc72818a2126e255aeefbc4e2b7742408672b4b8fa
font_02_sfnt_off00010901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10901 19504 bytes
SHA-256: 8430cab6db1f331defd3ea2d28ad06312066506bc0dd22f27cc387a0a2170ee7

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