Malicious PDF — malware analysis report

Static analysis result for SHA-256 9002df3c2824fe2e…

MALICIOUS

PDF

83.3 KB Created: 2021-06-29 09:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e0426282d2c7d68bf90563a9ed12d09c SHA-1: ed7de4e18c402bf0db757b4d56e1e405441757ec SHA-256: 9002df3c2824fe2e5edd787464a8572e6512ca7e31618590181a8d3c108b9509
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous external URIs, many of which point to compromised WordPress upload storage or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and unreadable, but the heuristic firings strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://huntic.ru/uplcv?utm_term=research+topic+pdf
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087ba6fb142a---69032404261.pdf
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/f653215d828d474e0b79ccb99c4e5f54/vozojidazimux.pdf
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/0047646e4f2872180103e7f3964758c0/46655591664.pdf
    • http://agroanaliz.by/upload/editor/files/22342858171.pdf
    • http://emannsltd.com/userfiles/jopotazexinunurexopozarig.pdf
    • http://frangarcia.eu/upload/file/feramulejojulitawemasuru.pdf
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/af577111de6dbd339c039ff9d922b50b/tepitogizezofope.pdf
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b9d6465452c---92969523787.pdf
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160d60d73ba476---76224121761.pdf
    • https://biovuspharma.net/userfiles/files/jugaviredevezimaram.pdf
    • http://janatalnajaf.com/basefile/janatalnajafcom/files/65560443464.pdf
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd4d3b7305---73358585122.pdf
    • http://activesolutionelectric.com/images/file/49656324554.pdf
    • https://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4255b34f9---23276429091.pdf
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160700b007ea5c---jimarojatidurefu.pdf
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/694kgo02j0stnq0htrnbaj1jgs/87533265198.pdf
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/e32b86c5f85e9469e1893f0a53c960ab/53137024026.pdf
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9bd0aa5c29---xegudukanilumu.pdf
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/b19q772295ahp11ahbse8uce44/27297125704.pdf
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0526a05bd---lubavasoregimapedakil.pdf
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/d4h33e0npev36m16slqf256v01/98524914212.pdf
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/q34lte8p81euhikv14r1ijer84/32323975321.pdf
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/a536e81b2a1d624f88a1fd61dbebf3e0/pigolajodulowozibivugibe.pdf
    • http://thebellingerfamily.com/clients/0/05/05034faaa501c69409a7459485cba135/File/61145626020.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_off0000e2ff.bin
39e900e00c2a76788df1e962fa56b810ae9a8bff542ff20e27d437236222786c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FF 16636 bytes
font_01_sfnt_off00010e42.bin
c4095e8ecf6614637eb44591d4e5077b997402d5870f9b6276c46b67fb04d87d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E42 10612 bytes
font_02_sfnt_off000126b0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126B0 16792 bytes

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