Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a2d5a5f47134c3…

MALICIOUS

PDF

85.4 KB Created: 2021-06-25 18:42:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 752f4eb7860068d224f6c4a1f2970ae1 SHA-1: 666673b97fb81ff5b170ecd62c7663f180d116e7 SHA-256: 30a2d5a5f47134c31131d36e4ca3ce6a436d85cec61326815246162561cfa7d3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as phishing. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://catamma.ru/uplcv?utm_term=loan+repayment+amortization+schedule
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb243953c3---liwijub.pdf
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084c1dbe5977---vepitejupajabubeledeziw.pdf
    • http://usmleworkout.com/files/file/waranu.pdf
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae4817e6ae4---furifuxiletejebipomewinu.pdf
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160c3e1f4a608b---zamefojuporikokid.pdf
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/9e645f2fdd5653dbb6f7db8e4a6a326e/15256084971.pdf
    • http://geose.ru/userfiles/file/61428455125.pdf
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/31ii20i7tl777gc6ja1u5hf9ql/xuninopasubokemow.pdf
    • http://buergerforum-tirol.at/file/38772087541.pdf
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/47lslltspldoguodinio5osa0v/38256380568.pdf
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b55f01d5a68---werubapoxegib.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607c62485eb03---marukeratab.pdf
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160764a38ca3c6---55299782267.pdf
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5f1584b6c2---kaxapabafarelazerimun.pdf
    • https://beaszemin.com/files/43832529475.pdf
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/qn8f1g6v7va0hu5sel4a6ui0cn/tewewuvojupowumetib.pdf
    • http://daming-school.com/userfiles/file/73998263164.pdf
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afb0335be5c---93577557710.pdf
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a77cbc53657---43071306787.pdf
    • https://papersacksfactory.ae/images/bulk_images/files/lakejibiluxanowabujujet.pdf
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afbade9e746---12850538044.pdf
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca120ac3df---9263334068.pdf
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/af9ced618e1e39575297112ebf9e822c/sujatejo.pdf
    • 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_off0000e984.bin
565ac7d5cab0971e2d2c806d4135f8d2c9f0301e46eb8c68488c91b9a882f4d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE984 17392 bytes
font_01_sfnt_off000116ec.bin
be6b551625ae23e2ed76035100bc8b0125fd85f379aa29352ea0ccf62bdff4a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116EC 11012 bytes
font_02_sfnt_off0001305b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1305B 16792 bytes

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