Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b1047108c4e531a…

MALICIOUS

PDF

77.7 KB Created: 2021-09-10 14:23:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 1e4a84cd62f8c443d7e4414fb52627c8 SHA-1: 01c76981f396fd6e5b2ab2c489a8e40aa7956ec7 SHA-256: 6b1047108c4e531ac808d297bf8b8f3c95c149fba619f38d3bf1823b153fabe7
156 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised CMS upload storage and disposable hosting domains. These links are likely intended to lure users into downloading further malicious content or visiting phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://rh-h1tapi-turbo.com/contents/files/domevejanokofopijagugekab.pdf In PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/16139f546533e0---xomelu.pdfIn PDF document text
    • https://manhalhealing.com/userfiles/file/govokepimagogix.pdfIn PDF document text
    • http://jaqalsports.com/files/file/92901366291.pdfIn PDF document text
    • https://my-natural-style.net/upload/files/78736069498.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613985d3cc83f---41903011904.pdfIn PDF document text
    • http://osmed.cz/app/webroot/files/files/65052777534.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/ffb4d35785897a783eaec13c95f37c0f/muwewuxovan.pdfIn PDF document text
    • https://groupunsur1.com/contents/files/lukupegazafipobo.pdfIn PDF document text
    • https://xn--interpeas-r6a.es/upload/files/duwikizoxa.pdfIn PDF document text
    • http://dishandspoonproductions.com/ckfinder/userfiles/files/pofenovefenojuso.pdfIn PDF document text
    • http://zhouzhuanx.com/v15/Upload/file/202198153158661.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137b6340a641---muredi.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/41482998629.pdfIn PDF document text
    • http://moskvaznaet.ru/upload/files/soveligejevexaxo.pdfIn PDF document text
    • https://cfi-registration.amyhalter.com/buzzboxgift/img/userfiles/files/wumesoselogor.pdfIn PDF document text
    • https://smartmedia.ro/app/webroot/files/userfiles/files/3138167322.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/3d6a5b77c25b9308e1d61919f6bd53a9/rotas.pdfIn PDF document text
    • http://m3hotels.com/userfiles/file/19622489082.pdfIn PDF document text
    • http://hfnhsw.com/upload/files/37400011239.pdfIn PDF document text
    • http://www.gpe-el.pro/ckfinder/userfiles/files/romakefidopubom.pdfIn PDF document text
    • http://ore-processing.ru/d/files/23871206910.pdfIn PDF document text
    • http://craft-personal.de/userfiles/file/39523829169.pdfIn PDF document text
    • https://ietc-oman.com/userfiles/files/rawifewikudifanufinizo.pdfIn PDF document text
    • http://shopphutungmayphat.com/upload/img/files/45883369204.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=forbidden+archeology+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_off0000cb04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB04 10864 bytes
SHA-256: 2fcd0e856dd77de31710c693734da0a939003b7b40a56ddfcbb98c7bc89323a5
font_01_sfnt_off0000e382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE382 17452 bytes
SHA-256: 7fd381539390bfc0651b8e7090165952ded6eb3d54c0427a0e58cd07f7ddeaef
font_02_sfnt_off000110f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110F0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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