Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd7d2065a21b37fb…

MALICIOUS

PDF

96.2 KB Created: 2021-07-18 16:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: ae9ce29a768d89fb58261233015eb8b0 SHA-1: 9d910c87412d66040ebc65744f40ba133db38e0b SHA-256: bd7d2065a21b37fb8e50ad335e850fca9ba01155f7c7540b4fdd8d19b9394a18
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged as malicious by ML classifiers and ClamAV. It contains numerous links hosted on compromised WordPress sites, suggesting a link farm designed to redirect users to malicious or phishing content. While no scripts were directly extracted, the PDF structure and URL patterns are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ac23b58fde7---20579886608.pdf In PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b742902e524---64493323348.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16084255bdd23d---tolinuwibidudejazadukuweg.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160853973597e2---sosizatefuxojovebevu.pdfIn PDF document text
    • http://diysmart.net/userfiles/file/fidika.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3606509b6---82683732507.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160772f450aed3---31908044342.pdfIn PDF document text
    • http://xiaohecollege.com/d/files/tolanufimijijopelivum.pdfIn PDF document text
    • http://df-foundry.net/d/files/musetar.pdfIn PDF document text
    • http://aklond.com/UploadFilesfile///2021051003172823.pdfIn PDF document text
    • https://www.herewardcarpets.co.uk/wp-content/plugins/super-forms/uploads/php/files/daneaihnnc7mdncljfo1j14f3n/togepabe.pdfIn PDF document text
    • https://rocksoliddesigns.biz/userfiles/file/tosalufowovufosinufodipa.pdfIn PDF document text
    • https://alixdemassy.fr/userfiles/file/basadat.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f0de3c98c6d---femozufidasojiwez.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b8cdb21bf---bipitewodipuza.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/ffl2a7krks2oeakofqfehbf4r6/lajaruwixebavezedotexo.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b672eee17cd---82131574252.pdfIn PDF document text
    • https://service-panev.com/userfiles/pobasufidoruzew.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/f66d3c974ea0b85525133d4fc94e276e/naduzikalumibavupuvagun.pdfIn PDF document text
    • http://www.alcera.ca/userfiles/file/12228072139.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d017ba16a7---23706910981.pdfIn PDF document text
    • http://pchs1967.com/clients/b/b3/b38b0c0be7ceca4b309dcb684d78a7c5/File/gufegamukuboka.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be3a41cc408---96163062079.pdfIn PDF document text
    • http://vishwkarmaenterprises.com/webroot/img/userfiles/files/11109541349.pdfIn PDF document text
    • https://atamergranit.com/userfiles/file/6054114465.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=franciscan+friars+holy+name+provincePDF 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_off0001168a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1168A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012e9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E9C 17076 bytes
SHA-256: 36426c800fae8c7f5d34a34d3e63e6204b702f91e88284918957aaaf6486b103
font_02_sfnt_off00015ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AE2 10804 bytes
SHA-256: 0dd4934b35590b489006f3ce9850378c0516883f708c70764eda6ad6dfed79fd