Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc297a63b68b9ac…

MALICIOUS

PDF

71.8 KB Created: 2021-09-09 00:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 2bc3c56aa8abe12f3ed68864a7323447 SHA-1: 8ef16ef1c93866011ba8d29cc1e8a48f1eefe0bb SHA-256: 7bc297a63b68b9acc551bf3c41e9115dd7c123b1b1b6d7b1da3fec6303c6fff1
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 0.9951

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://inwebjor.ru/uplcv?utm_term=justice+league+download+in+tamil PDF link annotation
    • http://tchid.net/userfiles/file/wimojigomuzefeviwigi.pdfIn PDF document text
    • http://hennel.hu/sources/elemek/file/7508322103.pdfIn PDF document text
    • http://qqwandai.com/uploadfile/file/bagurozovofosuvifusulare.pdfIn PDF document text
    • http://auto-rad.pl/userfiles/file/xasoxoxadubo.pdfIn PDF document text
    • http://b-solutions.net/userfiles/file/83139703834.pdfIn PDF document text
    • https://autonoleggioassereto.com/file/64006683197.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/f2005045d361615010763d8dfa2d9c8f/78209843532.pdfIn PDF document text
    • http://www.ciesol.es/ckfinder/userfiles/files/34390452856.pdfIn PDF document text
    • https://motoquadro.de/userfiles/file/69045246187.pdfIn PDF document text
    • http://homelife-superstars.com/image/files/25323440216.pdfIn PDF document text
    • http://taiwan-tsai.com/upload/files/8533825488.pdfIn PDF document text
    • http://xn--knstlerische-biografie-arbeit-lbd.ch/userfiles/files/14136487519.pdfIn PDF document text
    • https://irastuff.com/admin/ckfinder/uploads/files/13553841661.pdfIn PDF document text
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/32889294675.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/bulisetubodij.pdfIn PDF document text
    • http://maketmaster.ru/admin/ckfinder/userfiles/files/57966304520.pdfIn PDF document text
    • http://kossuthdigisuli.hu/userfiles/file/gimibutoles.pdfIn PDF document text
    • http://na-bytecek.cz/UserFiles/File/buvotuge.pdfIn PDF document text
    • https://tybistanbul.org/resimler/files/kebobawu.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/066bd129b1b1c16aa900f7ef2482bc90/5654534531.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/wobiradofef.pdfIn PDF document text
    • http://badgerhillfarm.uk/suvupixogilifikotike.pdfIn PDF document text
    • http://zonazero.es/userfiles/file/41134269112.pdfIn PDF document text
    • https://vnsteeldetailing.com/UserFiles/files/kixadabaradobulivefidebo.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

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_off0000b0c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c8d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8D3 18856 bytes
SHA-256: 61839a88338f7ce39ae1948f0f930afec693003ce999fa99b847b883b484892c
font_02_sfnt_off0000f908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF908 10788 bytes
SHA-256: 8715bae80ac9b78fe71b4a7c0230215545e29cfd8ee073c1696e25146691c571

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