Malicious PDF — malware analysis report

Static analysis result for SHA-256 15ee90e4eceeec75…

MALICIOUS

PDF

79.9 KB Created: 2021-09-19 20:24:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: f911fa01112e2ba227533420d0681b7e SHA-1: aa8f474839b5828ce8b91d182758c32172c82acc SHA-256: 15ee90e4eceeec753ded91d8f725a99d1e7373be4ffd070c86b443ae0c24bf73
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to various domains, suggesting a link farm or redirection mechanism to distribute malicious content or phish users. The PDF structure and numerous external links are indicative of a phishing or malware distribution campaign.

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 https://wastran.ru/uplcv?utm_term=punjabi+movie+jinde+meriye+download PDF link annotation
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16144d25d7fe2f---vipipigiwelam.pdfIn PDF document text
    • https://tomaszbizon.tomaszbizon.pl/web/uploads/files/36624732342.pdfIn PDF document text
    • https://jills.reviewz.eu/app/webroot/files/userfiles/files/38936515450.pdfIn PDF document text
    • http://mlsconsulting.net/cms/files/File/39479465342.pdfIn PDF document text
    • http://bekkercoon.ru/ckfinder/userfiles/files/tugofejojutezo.pdfIn PDF document text
    • http://kechengchem.com/upload/files/vunure.pdfIn PDF document text
    • http://cariboohose.com/userfiles/file/xenonivokigo.pdfIn PDF document text
    • https://www.cosanuesa.com/componentes/editor/ckfinder/userfiles/files/789235489.pdfIn PDF document text
    • http://emblem4home.com/UserFiles/Member/File/78572792979.pdfIn PDF document text
    • http://abwingsbuffalo.com/uploads/files/xefazitibapagodiwipukosir.pdfIn PDF document text
    • https://tarsiman.ee/files/file/73407490958.pdfIn PDF document text
    • https://foodsafebox.com/ckfinder/userfiles/files/400284749.pdfIn PDF document text
    • https://sysyanginguvenlik.com/uploads/files/vogabuvewilopigejofiludun.pdfIn PDF document text
    • http://olgapolyakova.com/files/files/21556385892.pdfIn PDF document text
    • http://personnelstrategies.net/userfiles/file/24657523326.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/kapogosolodugovokaxej.pdfIn PDF document text
    • https://brakos.it/file/29051337368.pdfIn PDF document text
    • http://impex-italia.it/userfiles/files/genujagavezekafev.pdfIn PDF document text
    • http://ayrh.internet-match.com/upload/files/97933372537.pdfIn PDF document text
    • https://vpmemorial.net/images/file/dalinesovu.pdfIn PDF document text
    • http://www.groupementpecheduloir.com/ckfinder/userfiles/files/wepewusogu.pdfIn PDF document text
    • http://thesecurityguardunion.ca/userfiles/files/ladufojitamowivotugoseje.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_off0000cc7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC7E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE495 10780 bytes
SHA-256: 5ac752ffea5dfdcdc18f200fa778e95e7e32c90281641ce170bb4bbfe8562d2a
font_02_sfnt_off0000fd52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD52 20196 bytes
SHA-256: 47e39caf063e8a0992125ce32266617c4a0e21c5e8e5850e2cc3288bc25bb854

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