Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ebdbee449bee351…

MALICIOUS

PDF

88.8 KB Created: 2021-09-21 02:02:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 1059545ec67f8cba7404230e3de8e195 SHA-1: 23a92f6b9c3f66946e3e328efea8214a637fe1af SHA-256: 1ebdbee449bee3518d43ae06e859777f8461491ca0226c66a300c4629dfb35ce
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://philabc.ru/uplcv?utm_term=the+king+of+fighters+2014+apk+download PDF link annotation
    • https://highlander-inn.com/assets/userfiles/files/nusudusikasodekawebu.pdfIn PDF document text
    • http://finara-v.com/file_media/file_image/file/zunapevoxevo.pdfIn PDF document text
    • http://canavesiobruno-architetti.it/userfiles/files/79680601590.pdfIn PDF document text
    • http://smenergy.kr/uploaded/file/182498154612f4d1d8aaaf.pdfIn PDF document text
    • https://euronuts2009.ge/files/files/lafopapotif.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613090d4bc780---setobegufa.pdfIn PDF document text
    • http://tweddlefoto.com/files_contenidos/upload/files/12465721932.pdfIn PDF document text
    • https://drhuanghair.com/uploads/files/202109010355524468.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132c91f90e08---67167067885.pdfIn PDF document text
    • https://badeluxe.com/userfiles/files/408482192.pdfIn PDF document text
    • https://monographie.com/ckfinder/userfiles/files/kutalezebojifososuvox.pdfIn PDF document text
    • http://businessnavigator.in/ckeditor/uploads/files/88217283749.pdfIn PDF document text
    • https://cashcruis.ru/wp-content/plugins/super-forms/uploads/php/files/35a1a0af1c8c6f29108b13dd3e49fc0e/lipiz.pdfIn PDF document text
    • http://batterseataxi.com/survey/userfiles/files/61583990945.pdfIn PDF document text
    • https://edouardweil.com/userfiles/file/vupowuteborarevuxisedotox.pdfIn PDF document text
    • https://eravukappalpalli.com/userfiles/file/kuwule.pdfIn PDF document text
    • http://romovi.net/sgi_userfiles/userfiles/files/tamupaze.pdfIn PDF document text
    • http://noavarservice.com/ckfinder/userfiles/files/dimikotek.pdfIn PDF document text
    • http://www.electricman.in/demo/frontend/web/uploads/files/90898147957.pdfIn PDF document text
    • http://gz-chengeng.com/uploadfile/files/97100140874.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613686cfac9a2---32498276901.pdfIn PDF document text
    • http://mimarkamilozkartal.com/userfiles/files/439676075.pdfIn PDF document text
    • https://laps.pl/userfiles/file/lezuselurap.pdfIn PDF document text
    • http://elosc.com/upFile/file///ITX202109170720147593.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD479 16232 bytes
SHA-256: 01cd0e4798e93fb086042d610f43ddeed7bf091af48aa863f5c4a4f61b651684
font_01_sfnt_off0000ea52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA52 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10264 21788 bytes
SHA-256: 22610ff7a19dd7fc19011df421cdd522d08c2c9fda6709d75864dae3dab3c19a
font_03_sfnt_off00013a10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A10 11288 bytes
SHA-256: 53d3a9ce392d68fbdb974b145088814939fae25719dc8dd225804513b89bae87

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