Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ef9a06ad867697a…

MALICIOUS

PDF

69.4 KB Created: 2021-09-10 00:03:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: facabc68665f9a02124e222d6a555bfc SHA-1: cc2032db4c1b559ee3cd17181dc26f7c3796ff81 SHA-256: 5ef9a06ad867697a4a15525281b34d9149c8e832cb654de1a178b80a3fec5009
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 0.9956

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://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/161305852e6d61---petel.pdf In PDF document text
    • https://www.hermanosvalerorecio.com/ckfinder/userfiles/files/pevuzovilonorupafaz.pdfIn PDF document text
    • http://www.sec-ollivier-associes.fr/www/upload/file/39443582287.pdfIn PDF document text
    • http://torgoborud.org/images/file/73860422361.pdfIn PDF document text
    • http://hoadondientu-ptp.vn/images/ckeditor/files/51078865132.pdfIn PDF document text
    • http://elektromig.pl/userfiles/file/fojisugewugap.pdfIn PDF document text
    • http://tao-oita.com/admin/upload_filesfile/gekosixuwitebes.pdfIn PDF document text
    • http://www.hzkontejnery.cz/ckfinder/userfiles/files/rojifexafozoxu.pdfIn PDF document text
    • https://vinamex.info/uploads/news_file/wazusoganoxejapamuze.pdfIn PDF document text
    • http://timnhanhonline.com/upload/files/dudexakodad.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1613867d850643---rirap.pdfIn PDF document text
    • http://www.dfdtrading.sk/ckfinder/userfiles/files/diruwarumat.pdfIn PDF document text
    • http://ohmytour.kr/FileData/ckfinder/files/20210902_BE29725C4C13B930.pdfIn PDF document text
    • http://ivankotov.ru/img/lib/file/35518791413.pdfIn PDF document text
    • http://homestationrealty.com/userfiles/files/jesemoxagani.pdfIn PDF document text
    • https://www.shipgo17.com/plugin/ckeditor/ckfinder/userfiles/files/46532673929.pdfIn PDF document text
    • http://moveworldtogether.com/datas/files/37311001178.pdfIn PDF document text
    • https://www.baust.edu.bd/app/webroot/ckfinder/userfiles/files/59394354020.pdfIn PDF document text
    • https://bodymart.in/ckfinder/userfiles/files/kapijaxuzi.pdfIn PDF document text
    • http://paulgraphics.paulsfashion.in/files/bemavexasilavawodozudal.pdfIn PDF document text
    • https://iieng.org/editor/ckfinder/userfiles/files/27421547591.pdfIn PDF document text
    • https://vico-immobilien.com/ckfinder/userfiles/files/31466002452.pdfIn PDF document text
    • http://xn--j1aai7d.xn--p1ai/userfiles/file/76227950246.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+copy+sms+to+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

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_off0000b18c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB18C 10088 bytes
SHA-256: 3008b97027f1558f6d0d5fd791d194f7273bf513d5e502c51a49306ad4f16628
font_01_sfnt_off0000c817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC817 15756 bytes
SHA-256: 1f6be354c592a3cedbb45c0611a4952ed5abac33f715024c773f40790cd06107
font_02_sfnt_off0000f056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF056 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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