Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fa14e5aa36b9edd…

MALICIOUS

PDF

211.6 KB Created: 2021-08-08 13:54:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: c1480354c9c64169637b220d93e494ba SHA-1: 4111d4670f0898b7a10bf74b637176d72d432941 SHA-256: 8fa14e5aa36b9eddd562d2bba05590c94601fd1f2b84dc0524b1a7e2e9fe07d5
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to compromised WordPress upload storage or unknown domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8156

Heuristics 5

  • 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.
  • 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 http://lab4050.com/upload/editor/file/bikolexopowa.pdf In PDF document text
    • http://remaining-mc.de/userfiles/file/lasakofawofim.pdfIn PDF document text
    • http://wang023spa.com/userfiles/202106file/2021061601554470554.pdfIn PDF document text
    • https://bienenaktuell.com/sites/bienenaktuell.com/files/file/vaguvopumogadone.pdfIn PDF document text
    • http://gesht.ru/admin/ckfinder/userfiles/files/dutukoxurazupizal.pdfIn PDF document text
    • http://chrislahoda.ca/userfiles/file/36045403271.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/bf9e1955c6030e49f77912377ace794a/wapenupiwanewajurololel.pdfIn PDF document text
    • http://biirbeh.mn/images/content/file/xotivudobo.pdfIn PDF document text
    • https://beytarimcilik.com/admin/editor_resim/file/2310078486.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/penogopilapalezitore.pdfIn PDF document text
    • http://deauville.ru/files/file/jivureb.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/japowajad.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16096534596369---furufipapedamija.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/rvkqk5mee18qas4fv33kgma7r1/ziwemipebaremeduvex.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3d76c3614c---63556476743.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/2325b8000ab63c3eda7486438cb57026/8303452114.pdfIn PDF document text
    • http://imreelectric.sk/uploads/file/minov.pdfIn PDF document text
    • http://volkshilfe-vlbg.at/images/content/files/mojipokadulawajewimowoj.pdfIn PDF document text
    • https://abe-rdc.com/userfiles/file/31167469227.pdfIn PDF document text
    • https://arerp.kr/data/file///54399685855.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160e468811e4a3---gaxodigakilijibanifu.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/doretasemurow.pdfIn PDF document text
    • http://xn--2vxr09c6mc.tw/CKEdit/upload/files/rodawokafazokorobof.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/79644644526.pdfIn PDF document text
    • http://ruegen-ferienhaus-schneider.de/userfiles/file/luzawe.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/0fc5d506b723421c3202317615be9319/62958765872.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=beyblade+burst+turbo+all+episodes+freePDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F802 16132 bytes
SHA-256: eb83fb48a2f60ac59fad768156047f025764cad4052c8f34695a9c8dd2456ad8
font_01_sfnt_off00020d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20D74 10792 bytes
SHA-256: a274563d304c252be6670d050e26d8d4b731df9cb561f6119de4f99c018924bb
font_02_sfnt_off0002263f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2263F 19196 bytes
SHA-256: 35dd2f633621cfa85e0bd1833fbf1def1f82a6034671ccca1dc39704a93663a8
font_03_sfnt_off0002579c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2579C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off00026faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26FAA 77892 bytes
SHA-256: f409b48050177451036207d2c5018d84f5e82c3ed5d1b1041e2d570451fe0702

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