Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e195cfb7815b4fe…

MALICIOUS

PDF

82.6 KB Created: 2021-09-15 00:03:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 236ff83eb11e97e34f3341e20f04e4a7 SHA-1: 6974a0fd2be76696e15c4f3eafb7e42e1ade1a4d SHA-256: 6e195cfb7815b4fef6838b4b502c3b20bf89ef94326e136b2c7aa3eb40de80dc
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://porfic.com/fotos/file/xedafukuromimabod.pdf
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ec5f6d60c4---pedeso.pdf
    • http://german-ex.com/images/blog/file/49060325204.pdf
    • http://standdominica.org/files/files/99192434810.pdf
    • https://xn--80aaa1arbfjoe3bzh.xn--p1ai/data/files/wiluwi.pdf
    • https://banktapeunadana.com/tapeunadana/bank2/admin/userfiles/file/zenumoxufe.pdf
    • https://northwestconvention.cz/data/files/31458622646.pdf
    • http://eyela.kr/uploadfile/fckeditor/file/79247762505.pdf
    • http://babamoleskine.com/files/file/zejatadasapapotonap.pdf
    • http://hftyby.com/upload_fck/file/2021-9-4/20210904215232467731.pdf
    • http://kdwatch.net/upload/files/2021091021461832.pdf
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/c0deaa91fb3cb2c0fc4b35e7cf33317d/tanenadivuluduzelaw.pdf
    • http://aven.su/userfiles/file/fokejokizutagikuruf.pdf
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/vurirazakubarakukotazikej.pdf
    • http://meuseguro.top/fotosempresa/files/94141749722.pdf
    • http://soc-in.com/data/media/files/rasotekano.pdf
    • http://www.gleason.com.au/application/third_party/ckfinder/userfiles/files/zatisefodudekidoreb.pdf
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161410dfe83e08---rivepibo.pdf
    • http://stressmanagement-karriere.de/userfiles/file/53537258501.pdf
    • https://naucharts.com/ckfinder/userfiles/files/wizanujorino.pdf
    • https://mingyi-lock.com/data/file/userfiles/files/90779238010.pdf
    • http://arqing.es/ckfinder/userfiles/files/rimelefadafimorupasevizu.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=corruption+apk+download
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc02.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC02 16792 bytes
font_01_sfnt_off0000f419.bin
39493ef6a2d062ce9fc809d3c22eae7ad5979e5fea3d49db58a909c0f998cc4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF419 10392 bytes
font_02_sfnt_off00010bbe.bin
bee43fd25898f543dc22b2475fcf1819d4465eaa0b847c1220ebf66ef6d171cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BBE 18876 bytes

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