Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2265ddf755fd065…

MALICIOUS

PDF

86.3 KB Created: 2021-06-27 05:32:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 303178d943eb96baabf5d6fc6673e1b3 SHA-1: 9340b39e008e77663c2e2c7f7b6218c4159850cb SHA-256: a2265ddf755fd06560adc1ff52989987ea58258775596de1c507b0f0e91ba85d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many pointing to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The heuristic 'SE_INVOICE_LURE' indicates the document's content is likely a deceptive lure, such as a fake invoice, to encourage users to click these links. The presence of embedded JavaScript, though not explicitly detailed, is a common method for initiating malicious actions or redirects within PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://coretry.ru/uplcv?utm_term=journalise+the+following+transactions+examples PDF link annotation
    • https://ajitcoatings.com/uploads/tezirelami.pdfIn PDF document text
    • https://www.lashharmony.co.uk/wp-content/plugins/super-forms/uploads/php/files/uvft0ontj12qj5m1ba5leb66j1/86657554611.pdfIn PDF document text
    • https://netiko.ge/img/Data/file/39740280844.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/c332608d412bdfd8deb85dfc9ebca7fd/60628859619.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608598c7c837b---15664407039.pdfIn PDF document text
    • https://bamfieldrental.com/userfiles/file/moxesadeleserati.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/gi7ecd50cn9p02iq37mqbvnthu/zilovozupixarafa.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/62jtcm83ik491e91aias2ln29i/6365970958.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0757a24cd9---vuganiboruwamirujifa.pdfIn PDF document text
    • http://jrmhandling.nl/upload/file/52761192057.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/448b317d841c9da54e27f236b9e8758d/torivipegasawoxeraruk.pdfIn PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f60e8011b3---ludakeniligida.pdfIn PDF document text
    • http://expresskaliski.info/file/49556507606.pdfIn PDF document text
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/246qc3trqj7slfqv980jc8spv5/85712499944.pdfIn PDF document text
    • http://creaorganization.com/depo/sayfaresim/file/miweped.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/16094de890d118---82978348165.pdfIn PDF document text
    • http://testplanet.nl/uploads/files/71255320564.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/22127853747.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/tusuzawuve.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/83c895f3495baf51de0551aaa43e4a45/93410271941.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606faac91af3c---vegifadujoduguki.pdfIn PDF document text
    • http://jpind.pl/userfiles/file/30009231192.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/904f850a6a738daa16d3b12356fa39fd/fefenitifasiromufopozosat.pdfIn PDF document text
    • http://kangs78.com/clients/66216/File/13313157978.pdfIn PDF document text
    • 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_off0000ec2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2F 17380 bytes
SHA-256: e6f73c53b44d3766100eff25bc5b7704f2d665625959a7318c7ef4cd096331b6
font_01_sfnt_off00011998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11998 11204 bytes
SHA-256: 5b79ee7d417ec25992bfa194e8ba292d672e3085731045f1da70d59a36f29bb5
font_02_sfnt_off000133bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133BB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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