Malicious PDF — malware analysis report

Static analysis result for SHA-256 057174e5dfa62e93…

MALICIOUS

PDF

90.8 KB Created: 2021-08-18 22:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 9d48c5347a5109da2443cef3053c3fe3 SHA-1: 34e2069a80fd7a56c2e8f784de0261b4ba2f2806 SHA-256: 057174e5dfa62e9367721207838e1ed9b406b843591c1cd6a30f655363a8a295
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to various domains, many of which appear to be compromised WordPress sites hosting PDF files. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing trojan. The presence of embedded URLs and the structure of the document suggest it's designed to redirect users to potentially harmful content, likely for phishing or malware distribution.

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://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/18ba4e28a7d53b4cd0e03081c7524697/nolimume.pdf In PDF document text
    • https://art4you.sk/editor_uploads/system/files/luxopikavofo.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/febuxelolowazuzo.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/riord5dbauamljkpd4omsaj70h/60069382432.pdfIn PDF document text
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/bcfe13ffabbf234738c8b200ad360e5f/12002234169.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/kbrpsp1cgo3enggl01978bqpu8/wuzap.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2702f561fe---tekazulawefofuwon.pdfIn PDF document text
    • http://windmill-bv.com/userfiles/files/81661559716.pdfIn PDF document text
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/33787dd106b7fa30760fe9d53e556620/91325879201.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/f9dc7466f3c8bccf98283010a828bc3b/6075690623.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16087d9e690b1a---55450062172.pdfIn PDF document text
    • http://beiwendq.com/userfiles/file/tunelupibed.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/vllc82dbi1fukhi7346fu60in5/1560313548.pdfIn PDF document text
    • http://madmojo.com/fckupload/file/mewosizix.pdfIn PDF document text
    • http://pazarziraat.com/userfiles/file/tujakilupipokok.pdfIn PDF document text
    • http://alfonsoguiggiarchitetto.it/userfiles/files/18231896826.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/32983534110.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/3cb76b908b7851a764eb11e1425f0de0/49157093252.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/dbf32862e2a71c65928301daac343d77/sebupuv.pdfIn PDF document text
    • https://f27szerviz.hu/upload/files/61144357243.pdfIn PDF document text
    • https://stillwaiting.org/userfiles/file/simuwobozi.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610877fbd8f17---sodixinenunulapiroz.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cb4691037dc---pajojisetidomabozozirake.pdfIn PDF document text
    • http://kapli74.ru/upload_picture/pagitefigomawexugoju.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=harry+potter+and+the+goblet+of+fire+chapter+33+summaryPDF 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_off0000feba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEBA 11584 bytes
SHA-256: 6b1b582738f9f60e00e34b2b3d542a3ecddfffc7fce8dc68c76fbb2144d244e2
font_01_sfnt_off00011997.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11997 16816 bytes
SHA-256: 1be605294b537831243fbd63b61f7cbad1d8da393c385e9ead5ac23d1b8860aa
font_02_sfnt_off0001456a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1456A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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