Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f2486d574568fd9…

MALICIOUS

PDF

111.0 KB Created: 2021-09-16 10:07:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 073b7d1b43aa6ab27ec437be8c973cda SHA-1: f369f805421727b5ca0190c7424ec8df48bbe03b SHA-256: 9f2486d574568fd9f6cf2e595e319892ed10ee7a3ec4eca11f4b46d0cdb1b349
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://coretry.ru/uplcv?utm_term=erich+maria+remarque+all+quiet+on+the+western+front+pdf PDF link annotation
    • https://fix2go.info/userfiles/file/xibinidazorerakexileredi.pdfIn PDF document text
    • http://mextro.de/upload/files/zepawegiwuduju.pdfIn PDF document text
    • http://alpes-maritimes.proximeo.com/ckfinder/userfiles/files/44257816006.pdfIn PDF document text
    • http://albertf.madteam.net/ckfinder/userfiles/files/48142492054.pdfIn PDF document text
    • http://tantex.org/tantex/tantexuserfiles/file/94764732989.pdfIn PDF document text
    • http://uniondrygoods.com/fckeditor/userfiles/file/walewujavutulazuzoluku.pdfIn PDF document text
    • https://cuatudongsaigon.net/uploads/files/70638857391.pdfIn PDF document text
    • https://ateliersmq.com/pevron/www/img/file/3914871483.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/445b5ee270da88044471731d5306ff93/vamusototimijikeli.pdfIn PDF document text
    • http://phukientubepxinh.info/gomsu/sanpham/anh/files/31536820634.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/vgaehdoubk55evfeardb6d5s44/58835969152.pdfIn PDF document text
    • http://xn----7sbev0bhje.xn--p1ai/images/news/file/2450414193.pdfIn PDF document text
    • https://jogamiskolc.hu/ckfinder/userfiles/files/sarurowo.pdfIn PDF document text
    • https://www.psk.com.au/application/third_party/ckfinder/userfiles/files/dowutozawu.pdfIn PDF document text
    • http://kibbkw.com/uploads/file/javebidepeb.pdfIn PDF document text
    • http://acmemask.com/upfiles/editor/files/dugakiwipiwemejox.pdfIn PDF document text
    • http://www.golfusa.be/userfiles/files/jafomufuni.pdfIn PDF document text
    • https://mytekas.com/UserFiles/file/xizewopudepe.pdfIn PDF document text
    • http://vce34.ru/attachments/file/29959249787.pdfIn PDF document text
    • http://master-stroi76.ru/userfiles/file/wozofivuzowixo.pdfIn PDF document text
    • https://doitoutdoorz.com/file/jbpj0wjgYCDI8TyK.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012cba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CBA 11200 bytes
SHA-256: 0dfa4edc3aa0bd49785e815f6dde11877cb2d92944ce5eecad873b5f7fd5332a
font_01_sfnt_off00014696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14696 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EA8 22444 bytes
SHA-256: f43dc97b6a03ab65c7ddf99c31da7b89c7e32fd96459354d927764fce8a771b3
font_03_sfnt_off000197de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x197DE 16244 bytes
SHA-256: fddcbe21bdf9fb2753729b4ab5b26d7a3fbb01e3fe51d41ab0725360e25c189d

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