Malicious PDF — malware analysis report

Static analysis result for SHA-256 0691cdd9459447fe…

MALICIOUS

PDF

85.9 KB Created: 2021-09-07 03:37:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 1d5b745e8e0f8148817227f1eec7bbb1 SHA-1: 13c9a2aa9445af0ded8ee8f609e8c36a4743edd1 SHA-256: 0691cdd9459447feaf67fb737a2a68d443569f40d9d6b93622ff17385cf13e00
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm pointing to numerous domains, many of which are hosted on compromised CMS uploads or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URLs are part of a strategy to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://siroyensao.com/upload/files/lonas.pdf In PDF document text
    • https://mimpishio2bet.net/contents//files/31203062181.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/fokawikovusulelanodo.pdfIn PDF document text
    • https://aannemingsbedrijfbarthulsbosch.nl/userfiles/file/jariv.pdfIn PDF document text
    • http://aotwresort.net/ckfinder/userfiles/files/95939921615.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/336f152e37ba17e3b5c4d839211c8806/gifojodezin.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160804aaaaee90---jironegabowegokixu.pdfIn PDF document text
    • https://lasanisports.com/files/rufeguzixenazibajagefex.pdfIn PDF document text
    • https://manage3.realtourvision.com/rtv/ckfinder/userfiles/images/files/vevavakujomujizamamesodi.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e5ab0c5779---bavujusir.pdfIn PDF document text
    • http://rentaruedas.com/files/others/lemilatogu.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609054a09e9ad---43018857814.pdfIn PDF document text
    • http://beautybybelief.com/admin/images/file/24599644326.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce25f5463c---35648795431.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/ligssgr83oh72j2oriebp6mvs4/pafevubemijiso.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/91392266643.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608244d4c07f8---widapu.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/kivevi.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/70n1vgpth01h0d8gmna9a68lct/5115883837.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160866421da6f6---79785191139.pdfIn PDF document text
    • http://transcash.com/ci/userfiles/files/bebagetijubozuvenepeven.pdfIn PDF document text
    • https://mobilieroccasion.fr/uploads/file/kikaxilagisiximutaxix.pdfIn PDF document text
    • https://olterus.info/contents//files/tulodudexerizunatavuri.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16070ef69eb7a7---texes.pdfIn PDF document text
    • http://myphamlulanjina.com/upload/files/bilovaramavugolujumabufe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=ictericia+obstructiva+maligna+pdfPDF link annotation
    • 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_off0000e6f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F3 11220 bytes
SHA-256: d918d6ddf01e69fc0a2bc3cc5cd61b417c948c81c15d7a992c2b86911a7be2d8
font_01_sfnt_off000100d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D2 18784 bytes
SHA-256: 7b6086ffb07f42e054ac2d20a98dbe040b7e021c30b1a347d20f91a993694e41
font_02_sfnt_off000131da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131DA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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