Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4ebefb9b74f3848…

MALICIOUS

PDF

80.5 KB Created: 2021-09-04 11:12:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: f4558954ec5dc1ec1bdd0c0ce6adc4d9 SHA-1: 1d495c9017dacd54d3c5b7023b14a8ea8745745a SHA-256: e4ebefb9b74f3848e64f1a42f2f202f8dc8a6d38532fa8a74fca2fffcc5d3f81
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, likely to obscure the true malicious destination. The document body is unreadable, but the heuristics suggest a lure related to 'power of attorney template PDF' to encourage clicks on the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://anup.bo/images/files/vunazejodakadasopip.pdf In PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/b2a06aec2f32bd8a363330405c57a42e/dopuvedukujajuligopidel.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/iol61duovlt3declp4s8s7atvc/38735541914.pdfIn PDF document text
    • http://canevinclassof70.com/clients/6/6b/6b8b8ee0d314e59372afbcb75100d768/File/bemajagaxafonodebutudam.pdfIn PDF document text
    • http://thongthien.vn/upload/files/17606144219.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a6f4ea10f---fegowe.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1606c84794bc10---81303559947.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160872792da257---mewamupuwesojur.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/445d908b03ae29d5a869ec042641ed34/kojigadaso.pdfIn PDF document text
    • http://berallebags.com/UploadFiles/FCKeditor/20210826055801.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/16111891aa9924---simefuruxovakotopefafuza.pdfIn PDF document text
    • https://www.ijmsir.com/ckfinder/userfiles/files/50075543652.pdfIn PDF document text
    • http://gesundezellen.de/neu/userfiles/file/sogiduvutajolefomezuxeda.pdfIn PDF document text
    • http://turinhotelcompany.com/userfiles/files/16130603497.pdfIn PDF document text
    • http://ji-tien.com/userfiles/file/magez.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160acbe9abffa5---73589207655.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160c002ba55647---52528044159.pdfIn PDF document text
    • http://hurtmar.pl/Upload/file/bidapudiwigexu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aac7aa43090---basotigusofiwiduditubakag.pdfIn PDF document text
    • http://haiphongcontest.com/images/files/54494343796.pdfIn PDF document text
    • https://capitaleny.com/wp-content/plugins/super-forms/uploads/php/files/2f2463b4e7bf7b5927be357e633a81d4/46889878803.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/3nis9d7rf4m5t52cmbb6km5ckq/11131119849.pdfIn PDF document text
    • http://etabetasurvey.com/userfiles/files/21279264389.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=power+of+attorney+template+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_off0000d737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD737 17300 bytes
SHA-256: cdd5a232587dc699e5bc16ee22098419649983cd1d86e0f98fde220789380f2f
font_01_sfnt_off000103ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103CA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011be1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BE1 10600 bytes
SHA-256: 6ebe5dbbf555ceec1ed69daaf347df2c7034c193303f48b69a68423a4f8d3d61

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