Malicious PDF — malware analysis report

Static analysis result for SHA-256 b060bfddeef7530f…

MALICIOUS

PDF

88.9 KB Created: 2021-06-25 20:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9e4bc58f391d7d3160934b8e6c6e85ca SHA-1: c5f0f0003c9a5ca834529a5e24c3cd9b6a04fd66 SHA-256: b060bfddeef7530f46e3943b721b66f5333ce09ad06f57993f53397c529304db
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites, which are likely used to host and distribute further malicious content. The presence of embedded URLs and the nature of the heuristics suggest an attempt to lure users into downloading and executing a secondary payload, potentially for phishing or broader malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160abf51f59a4d---jidune.pdf
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a18f21140bd---lofosinagudobuxumelobi.pdf
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085d72be41df---42053910415.pdf
    • http://dunajecbiala.pl/upload/File/xosomisolekejat.pdf
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/bc85826db2acab80a91ceae5570b1782/vamodaguzutibumawokanide.pdf
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c2b411b62c---zenuvexuzuguladeta.pdf
    • http://travelport.pl/userfiles//file/wunoluxapabawosexe.pdf
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16098eb011fbc1---fadel.pdf
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c5290757fe1---jonakigisabobemipefebojix.pdf
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc0b2afb52---juvexadogakix.pdf
    • https://licorne-hotel-restaurant.com/userfiles/file/92785145102.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c32fc730c2.pdf
    • http://hobbstownis100.com/clients/6/66/66141d04a4341350d76ae3a38785cb5a/File/54575805057.pdf
    • https://bestofbucerias.com/upload/file/turibufamiduxusujase.pdf
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/95e7d8e6f3dea64cfd6ae7ff187fc11b/41519650600.pdf
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608995cb1d60e---mijirixukobumafajizisema.pdf
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/2fec7c85452f81afdf95937870c323a4/kuxute.pdf
    • http://shinies.ru/img/lib/file/bufewuputesufeniwad.pdf
    • http://jngf.cn/files/file/62357073884.pdf
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/82835799825b22794ed3f73b0e6dcc95/44962256014.pdf
    • https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/h3rr32h1j8la7r9lalesis5hug/nuwatuzumazimirim.pdf
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609c61ce18bef---sanotalonirixelitumalita.pdf
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/d9mdnb21ctbg7vk6gbnehdpkn3/kezabegolod.pdf
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/d2b3ede3fcb7170784d53a6f9eb0a587/50808845130.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=parts+of+plant+cell+and+their+functions+pdf
    • https://mediaget.com/userfiles/files/25117421878.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_off0000f7c1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C1 16792 bytes
font_01_sfnt_off00010fd8.bin
a5b74e39778c97b88622761b587838e539ba6caefd3231b9c0661bbe50663eeb
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD8 10820 bytes
font_02_sfnt_off000128b5.bin
6760fb833342576a0c5529f71257b3bb1b0a39872396a0d2d7e6a6f873203230
pdf-font-stream PDF embedded font (sfnt) at offset 0x128B5 17456 bytes