Malicious PDF — malware analysis report

Static analysis result for SHA-256 6952fd27037f627f…

MALICIOUS

PDF

89.9 KB Created: 2021-07-19 02:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 095dc0518843b77bb962bed32ea9b61e SHA-1: ac5aa09940d63ccd921a9f92b41cf27c75a9f0bc SHA-256: 6952fd27037f627f4d6d40d6be2ca73a8ac9ac426865d570758e2fdfc1cf0b49
156 Risk Score

Malware Insights

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

This PDF was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites, likely serving as a distribution point for malicious content. The PDF structure itself is not directly malicious but serves as a lure to external, compromised resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 http://lsbwg.com/ckfinder/userfiles/files/20210701/1946043614.pdf In PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160717d24e63af---ladosib.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/sfjkaklnc8bfaaug1omq1u56hq/51252562963.pdfIn PDF document text
    • http://sy-smile.com/upload/files/79652979703.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160c8f45dd14f3---25619999297.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c30a2c013e6---8617529190.pdfIn PDF document text
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a30916a2264---kojakubulojesuli.pdfIn PDF document text
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0fb185985---bazigamezekajetezoner.pdfIn PDF document text
    • https://marblo.ph/app/webroot/img/files/28826449968.pdfIn PDF document text
    • https://www.jnvhardoi.org/ckfinder/userfiles/files/53560345655.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/onuv7o0i5b2v08id8p6g6opr91/15902350668.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607000a501449---vegubufudiwopanetalolepul.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf96f0dcb9e---webovitavugubibexerabega.pdfIn PDF document text
    • http://vladjurnalist.ru/archive/file/96121791377.pdfIn PDF document text
    • http://rltclassof1970.com/clients/8/8f/8ff9f19c840b982a6efda18ba8bb483c/File/kipumedaxuwu.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/up0of1gk80v3sr9s66catqomp6/77890944375.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba01c1ff05---24868667966.pdfIn PDF document text
    • http://3wsystems.com/shipinc/userfiles/files/74049646603.pdfIn PDF document text
    • http://sdds.be/userfiles/file/24108664529.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b63db039ef2---55835841008.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/2d531e67d35ccb2f33f83462180234e8/71095573869.pdfIn PDF document text
    • http://banghetretruc.com/media/ftp/file/ximojizituzupagu.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160d2a74ddb707---vixinunuxon.pdfIn PDF document text
    • http://93564497.com/userfiles/10171372188.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=find+ph+of+buffer+solutionPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4E 18064 bytes
SHA-256: 0f26216e24c28f8c9ac38674c6bcc482313753bdc1aeec34669017b2fa81fb2e
font_01_sfnt_off00012a21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A21 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14238 10648 bytes
SHA-256: 6ad3840f509a5d97b8e54eddfea497d4720495dce9035a9110a9bec93011ffb2

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