Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0401d402e94588c…

MALICIOUS

PDF

80.1 KB Created: 2021-09-08 13:22:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-23
MD5: 0e5ecbf9dbdfdae1abffd4b13680f9f9 SHA-1: d75d327ba616918eedd9270e33afed555219dc05 SHA-256: f0401d402e94588c4062fa197c9adcf5aad618185a222c34d127caae964fd562
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 0.9968

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 http://nigerseedindia.com/uploads/11355782754.pdf In PDF document text
    • http://pantryscan.com/123cars/imagefck/file/koratakapojuguvej.pdfIn PDF document text
    • https://jancsoalapitvany.hu/ckfinder/userfiles/files/61335016422.pdfIn PDF document text
    • http://ohappy.org/userData/board/file/23375278291.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/69892999332.pdfIn PDF document text
    • https://www.tri-or.fr/tri-or/ckfinder/userfilesfiles/sazazesed.pdfIn PDF document text
    • https://www.padanguparduotuve.lt/ckfinder/userfiles/files/37811612494.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135d78a5d284---67828796253.pdfIn PDF document text
    • http://litroshaber.net/resimler/files/redolutof.pdfIn PDF document text
    • http://tvkinter.com/file_media/file_image/file/kadavevefojixuk.pdfIn PDF document text
    • https://underworldgear.com/upload/users/files/dugebunejobixetokobudo.pdfIn PDF document text
    • https://egf.tw/test2/images/file/dokujupadixikekugirup.pdfIn PDF document text
    • http://www.ocptecnology.com/admin/uploaded/fck/file/jefajawifezobexo.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16133c19690046---40016140589.pdfIn PDF document text
    • http://s2group.pl/userfiles/file/gupoxadenovowajil.pdfIn PDF document text
    • https://rajakeempat.com/contents/files/18078889725.pdfIn PDF document text
    • https://semut73.com/contents/files/23420207500.pdfIn PDF document text
    • http://etabetasurvey.com/userfiles/files/bepiroronawijapemipe.pdfIn PDF document text
    • https://cafesca.mx/ckfinder/userfiles/files/ximamufezanose.pdfIn PDF document text
    • http://globalbando.com/DATA/upload/files/202109060744249019.pdfIn PDF document text
    • https://transturist.ba/ckeditor/ckfinder/files/files/72964504050.pdfIn PDF document text
    • https://nacituran.com/userfiles/file/75488771630.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=sustainable+agriculture+development+pdfPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD449 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ec5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC5B 16896 bytes
SHA-256: f5381c75cd317a25409f55aec5126ded223efb589cc3528c4656c6ca8c517cb6
font_02_sfnt_off00011895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11895 11344 bytes
SHA-256: bca5888e739d457a90826688374904313454d47dd9bcdb0b1661e4038496ba9a

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