Malicious PDF — malware analysis report

Static analysis result for SHA-256 006f63de5ff5d170…

MALICIOUS

PDF

81.1 KB Created: 2021-09-08 16:20:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: b349d4603810c31fe008c6e24fa6c29f SHA-1: 911295b44f0ad18875f4850c183a92ebd0d316b5 SHA-256: 006f63de5ff5d170d62c7a00b553abe9436473c0cd3afe16661a15e22ef52c97
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://architettorobertafasola.eu/userfiles/files/3130409442.pdf In PDF document text
    • http://arsvet.ru/img/upload/nosawugon.pdfIn PDF document text
    • https://quangcaowebsite.vn/uploads/files/jutika.pdfIn PDF document text
    • http://www.solarwindependence.com/ckfinder/userfiles/files/80184900221.pdfIn PDF document text
    • http://quiltingacademy.net/fckeditor/userfiles/file/memidilakepuke.pdfIn PDF document text
    • http://baozhaopharma.com/upload/files/33014100373.pdfIn PDF document text
    • http://anipetkingdom.com/webroot/img/files/wororeratokuj.pdfIn PDF document text
    • https://www.agencesramos.com/ckfinder/userfiles/files/24667731648.pdfIn PDF document text
    • http://agmapure.com/upload/files/jixovewogovupeguranu.pdfIn PDF document text
    • http://www.prakashirrigation.com/uploads/fck/files/dezifiwenenexakirexamoz.pdfIn PDF document text
    • http://fuerst-architects.com/uploads/file/14156397270.pdfIn PDF document text
    • http://zjbfjt.com/upload/files/109815396.pdfIn PDF document text
    • http://mirsistem.com/depo/sayfaresim/file/xebalerarifedaviselu.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/e1ce3adcf2cb76b908d2ecd2ff83a626/vobowowabex.pdfIn PDF document text
    • http://gapp.fr/medias/files/kapekota.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/16135cc5ca0c2b---89068173590.pdfIn PDF document text
    • http://alfatreyd-mebel.ru/archive/images/file/90802600096.pdfIn PDF document text
    • http://leoclubmarsala.it/userfiles/files/jagopikasixasewifo.pdfIn PDF document text
    • http://jiehuist.com/userfiles/files/surebokudopomaxagesumi.pdfIn PDF document text
    • http://freestyler.cz/img/file/dalowez.pdfIn PDF document text
    • http://dynamic1984.com/user_file/file/25162981299.pdfIn PDF document text
    • https://congnghiepxd204.vn/upload/files/80562939566.pdfIn PDF document text
    • http://cinebuzz.be/uploads/userfiles/files/25916464321.pdfIn PDF document text
    • http://vanlysecurity.vn/vanly/album/files/8053245364.pdfIn PDF document text
    • http://gardensyellowcab.com/admin/images/file/97524868695.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=common+idioms+exercises+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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D6 17572 bytes
SHA-256: f5274e4b1c0b1da5153309d60c03da6a3d76c416e24ffd0c9169dba0142e65fc
font_02_sfnt_off00011e7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E7F 10608 bytes
SHA-256: 40e7cc3b0fb8dc001d981245550d737b5562a325f671a614fa298a83e189865d

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