Malicious PDF — malware analysis report

Static analysis result for SHA-256 80aeb7523838f2b5…

MALICIOUS

PDF

82.6 KB Created: 2021-09-12 14:48:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 06275824202977983bb59820616e6e8a SHA-1: 4084aeec0da43a4aa12d9a1df2d8162293743d11 SHA-256: 80aeb7523838f2b5dcffc69d61c10ba37157ef1eae70818cfb8d582b80a740f1
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains embedded JavaScript and numerous external links, suggesting it is designed to redirect users to malicious content or download further payloads. The presence of a visual download button further supports a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://archism.ru/uplcv?utm_term=go+goa+gone+hd+full+movie+download PDF link annotation
    • http://pileshoppen.dk/userfiles/file/sorad.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16130fac5ccbcb---1898400117.pdfIn PDF document text
    • http://chalappuram.com/userfiles/file/54644352081.pdfIn PDF document text
    • http://nprofit.hk/userfiles/bebijisufesubuxejoxolu.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/ju0h58si059l5kv45l4vgfcnq0/52853097465.pdfIn PDF document text
    • https://vyaspublicschool.com/ckfinder/userfiles/files/dojidemuwirizotenijemo.pdfIn PDF document text
    • https://alpinashop.bg/files/93803240284.pdfIn PDF document text
    • http://bhk-aindling.de/userfiles/files/45524915832.pdfIn PDF document text
    • http://amsuatrust.org/survey/userfiles/files/36208618217.pdfIn PDF document text
    • http://backkwang.com/userData/board/file/15269382048.pdfIn PDF document text
    • https://rosycaffe.com/file/65270565172.pdfIn PDF document text
    • http://costruzionibulagna.it/userfiles/files/rejofiwaxen.pdfIn PDF document text
    • http://rlangkhan.com/upload/userfiles/files/10569658219.pdfIn PDF document text
    • http://alrehabourhome.com/userfiles/files/masejupeketuludan.pdfIn PDF document text
    • http://werder-ritter.de/UserFiles/File/kitevobowevoze.pdfIn PDF document text
    • http://xn--80aesyq.xn--p1acf/files/file/xerusupu.pdfIn PDF document text
    • http://elsped.hu/files/file/lumotivanure.pdfIn PDF document text
    • http://scuderia512.com/js/upload/files/dixazifizapuselux.pdfIn PDF document text
    • https://nichecnk.leaddeehub.com/userfiles/files/9661502531.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613be00838619---fewusefojosixapuwuji.pdfIn PDF document text
    • http://jtravel.clickis.kr/FileData/ckfinder/files/20210908_4FD0BA4FE5A4B3E0.pdfIn PDF document text
    • http://cantinachitarra.it/userfiles/file/bojadapet.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_off0000dfb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB7 10724 bytes
SHA-256: f8b7966f9df05e8688aedd62c15e11508ce8a18679b251fb6008f6c0db29b554
font_01_sfnt_off0000f7f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F4 17224 bytes
SHA-256: 1689579ffa78b06b40856d7b94876096d3ec113733d0990e7649e30911c607df
font_02_sfnt_off000124a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124A1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1