Malicious PDF — malware analysis report

Static analysis result for SHA-256 971d84002d78a282…

MALICIOUS

PDF

93.9 KB Created: 2021-07-04 06:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eb6dfb6a9d56fa2f76915692f50d7ed6 SHA-1: e1fb711996fa3773ec114616c5041bca271bb3e9 SHA-256: 971d84002d78a2820590e1409ed112cc839a397c1074838dfd5748a209afa157
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous links pointing to potentially compromised WordPress sites and other disposable hosting, indicating a link farm or phishing lure. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest an attempt to redirect users to malicious 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.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/ddcfea124a416cf91b0a87a219984319/jivagaxizekanezenuzesixem.pdf
    • http://studioagronomoserragiotto.eu/userfiles/files/19597791079.pdf
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/52688ecff3294dc5393703ef6f13e6bd/benelumudi.pdf
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/jh452igtpvgqsbos8c896sot31/negobadenosesuvaxu.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16077e5593ac0a---58498329550.pdf
    • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/16072b9c0eced6---14218689315.pdf
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a5068a5db4b---6276169564.pdf
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/01s4pa6v06r8vuv421vq43o4vi/wimuzalonabina.pdf
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607630d54b295---3621537202.pdf
    • https://irantruck.ir/data/file/18842610545.pdf
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1607052f392065---xomugotasexenalojadem.pdf
    • https://xn--arbeitskndigungsrecht-best-5zc.de/userfiles/file/zezemufaradawafex.pdf
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3b04aebd7---18113389748.pdf
    • http://kuzfarm.ru/images/file/dojidut.pdf
    • https://www.bistro-e.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9c182e524---kuwogokimofenolotukalix.pdf
    • https://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/a903e95eb84db31728b0d91cf1ecd444/25956637129.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8164b7fb10---bepixesevofizagunuk.pdf
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/e2ad9941b0c64a0671a148a32c737404/70397508556.pdf
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16087c0f894a71---sibazi.pdf
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/qpoq73dkuqbhvoc9u6tutas583/burosawum.pdf
    • http://thepnguyentran.vn/media/ftp/file/53562190850.pdf
    • http://evohome.pl/userfiles/file/nuzofekokewutoje.pdf
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/7mjccu4jh55qugb3f5ikqni0qi/zupisavozomevoxeratetaj.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=c+interview+questions+and+answers+for+freshers+pdf+free+download
    • 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_off000109e7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109E7 16792 bytes
font_01_sfnt_off000121f9.bin
aa821a3da4a716954fca90f4dcc473d1404a030ac9ab9a5c2a2e3943b4418e6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121F9 17636 bytes
font_02_sfnt_off0001506f.bin
b7f5e0fce451a12835062cf402f69a5334a98933d56df11e88d51a32eb38e991		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1506F 11024 bytes

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