Malicious PDF — malware analysis report

Static analysis result for SHA-256 2329545314129405…

MALICIOUS

PDF

97.5 KB Created: 2021-07-18 13:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 40ffa327db90aec32d95de14ced8c018 SHA-1: e22d3f37c18cd929c17cf098b408b00fa9ceed9c SHA-256: 2329545314129405cdf48dd664e145a781e94528a51464fe36fbb801d6d47b6b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document's structure as a link farm suggests an attempt to redirect users to malicious content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

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://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608027bd4ab9f---22906517007.pdf
    • http://limitlessillusion.com/wp-content/plugins/super-forms/uploads/php/files/17b23024c12fa2cf6e140e77912255c2/xozudegesopetolemo.pdf
    • http://guoyangmoju.com/userfiles/files/88043884588.pdf
    • http://prospekt-rostov.ru/ckfinder/userfiles/files/gevapasakomuruteradop.pdf
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/7c1e2daccf868ab4e44745f44a515d89/66194091581.pdf
    • https://svetpoznaniyaonline.ru/wp-content/plugins/super-forms/uploads/php/files/dc8f73cbb9a6054671186cf84b7ee1a2/1549963426.pdf
    • http://anhuishangbiao.com/upload_fck/file/2021-5-12/20210512110739344619.pdf
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/df0b89f77c6b0768c74536e30b7c480c/64871399123.pdf
    • http://vce34.ru/attachments/file/boviluwujinenajutizif.pdf
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607414cc6acc9---tegozegipaterabugunoteg.pdf
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160ba14037bab6---42686345219.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1609f37a9b159c---43284959929.pdf
    • https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/d81ca856a5cc5102fa14b161f77547a9/jofomatusaxile.pdf
    • https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/dd8472c695921f1607537772e5beeaef/nadujemafesakotisovajege.pdf
    • https://aitalk.vn/upload/files/devomimedajifew.pdf
    • https://tavio.ru/files/file/nuzosil.pdf
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/9b20e1e4633863c430e12df6613a0c5b/74122651616.pdf
    • http://xoblates.com/clients/e/e0/e08cfb93fb97b00c28394d0532709dc9/File/jiwibobewonobeju.pdf
    • http://rlangkhan.com/upload/userfiles/files/kumumuwipesajeluguruguf.pdf
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1607b08aebd334---zuxezenutuje.pdf
    • http://www.annaleehuber.com/content_files/file/94617748941.pdf
    • https://comobrew.com/newsite/images/user_uploads/file/78206580176.pdf
    • http://akademia-jedenastka.pl/zdjecia/fck/file/zolomalunulewasawores.pdf
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/55nq2fviqmmumv4nl8pl1mintn/16976412648.pdf
    • http://iltorg.ru/upload/file/jupofesidusulabu.pdf
    • http://serenetransformation.com/clients/870552/File/palipovalawaze.pdf
    • https://trellisdundee.com/wp-content/plugins/super-forms/uploads/php/files/bf21c592362d1d3b9dd7397960a222c5/ladujizimunegel.pdf
    • https://xn--mgbaf4adbs1bd2i.net/upload/ckfinder/files/fuloxe.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=constant+speed+time+graph
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000119d8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119D8 16792 bytes
font_01_sfnt_off000131ef.bin
d4224511b4ed858fb125b8bf7c7bb53068ddc86e266b985418f4aa48f10724a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131EF 10824 bytes
font_02_sfnt_off00014a84.bin
01b11f310c6bbc64f5ad02e10e4ce68d142b1ecac6024aa3189ca27b2b5800b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A84 17120 bytes

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