Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ea3ee5e6ecca63…

MALICIOUS

PDF

88.4 KB Created: 2021-06-28 06:09:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6c6c7d110e9a242d46d9e770f0432b1b SHA-1: 1e202960c5b2feedeafc1e259fc3bb4fc8745782 SHA-256: 02ea3ee5e6ecca639f2670037423040d5cb88acd94f2db083b73f1f9d9309690
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 functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable hosting. These links are likely intended to lead users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://catamma.ru/uplcv?utm_term=mcq+on+antiarrhythmic+drugs+medicinal+chemistry
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/2a8e12b0065595cf8a2a07e3fa9272fc/wufej.pdf
    • http://pensionpoint.cz/userfiles/files/93508176714.pdf
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160821e4303aba---lejomibovemimap.pdf
    • http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c6cef4d03e---36186541103.pdf
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/631515e490326e33ae90b035f99d7fad/13425653195.pdf
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1609b40a9f3f5e---wawiso.pdf
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160748a8dcf7b5---37190985102.pdf
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1607a547d0d538---13011457546.pdf
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/552be198ac4e9535ced85f8b416924c3/15623953795.pdf
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/2fd62232a7020d2ae27407b881e77981/togemesunaf.pdf
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160891774077a6---mamunadaralogu.pdf
    • http://zonwering-belgie.eu/ckfinder/userfiles/files/65336414148.pdf
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/66abe610033f113d17c15ebca729acb8/vupaxunoxavira.pdf
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608edf15872c5---kezotuwizurivuzuz.pdf
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/i5qagu9bdcbqg0oqh9qf8u7vj9/kurewizugu.pdf
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160967346d421a---430155036.pdf
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/16070c579ec220---54019151459.pdf
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607072d09c458---xuvuvolamapoxumeso.pdf
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/9903fc311bf42a684460b555d5d7c395/78263279025.pdf
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084e6abdbcec---94201351720.pdf
    • http://ajivikafinance.com/userfiles/file/pomuk.pdf
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/4f1c8c2df9fc46fbbf2328dd40463734/72437459049.pdf
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/f982b88c82bdd095a3deeaeff8c2d1ee/17514389338.pdf
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbcc9a161c---godidarekaziliwovanasojet.pdf
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160d6749e2ea4c---ludogodesiziladibupozusuf.pdf
    • http://asupuro.com/user_data/image//file/97775958379.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_off0000f2be.bin
de85bc57e1cc855fd59e59ea3430219981071b59041ae4afbd28645e69223d01
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BE 11172 bytes
font_01_sfnt_off00010c38.bin
6301a1363682995c0867793ba4c235599ffe4206ec974b239c3b960190f1375b
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C38 18136 bytes
font_02_sfnt_off00013bfe.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13BFE 16792 bytes