Malicious PDF — malware analysis report

Static analysis result for SHA-256 762293013f19cbf4…

MALICIOUS

PDF

86.9 KB Created: 2021-09-06 22:15:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 01e5b5be060de8e720648e986e4879ef SHA-1: 2489fa1378275d187999160d4be8b9dbef2e7b22 SHA-256: 762293013f19cbf44b4c53b62d94f5fd3b2d2915a75e937f2f277a179050ed9f
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier, indicating malicious intent. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting it acts as a lure to redirect users to malicious content. The document body is unreadable, but the heuristics and numerous URLs strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/68979709155f8d24e75de2ee79ff26c8/86514293549.pdf In PDF document text
    • http://goteneplast.se/files/images/file/92747126303.pdfIn PDF document text
    • http://arqing.es/ckfinder/userfiles/files/18435775875.pdfIn PDF document text
    • http://sassyissy.com/survey/userfiles/files/16495021813.pdfIn PDF document text
    • http://jar-ted.pl/file/rorure.pdfIn PDF document text
    • http://premium-t.info/files/files/fiwaxenujajidugane.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a84784a91e5---99588705005.pdfPDF link annotation
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/161266f2f52e73---gasoge.pdfIn PDF document text
    • http://elandtour.com/FileData/ckfinder/files/20210705_00C4EB7E03298A21.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/6215196893.pdfIn PDF document text
    • http://www.cavice.fi/tiedostot/files/redapuvami.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/fhotsc7tmuhq4ln7i4fveh1aie/mipigugetutepozanosiso.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/a9ntqarilcd8fbgqc2u379hqlm/70158301895.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16071660326c42---pajezase.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/34718bb5b1365c3f521cbcf29276947a/46356896336.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/ff62d1393c7558f99a2c60d851c25179/wederotabafo.pdfIn PDF document text
    • http://resheto.ru/users_images//fck/file/vomoguvunusesaz.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160813360f3394---jekimofifililaxosoj.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/215ba2de644723aa5d305dfbeff577a3/labumin.pdfIn PDF document text
    • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/ee7joppev13ets027icqs320c6/45473761501.pdfIn PDF document text
    • http://handsonmontessoripk.com/userfiles/files/10957266140.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160772ba287e99---18426736498.pdfIn PDF document text
    • http://abwlanham.com/uploads/files/68099288101.pdfIn PDF document text
    • http://gyuco.com/uploadfile/files/20210827_085701.pdfIn PDF document text
    • http://nyitotthaz.hu/userfiles/files/kitinetoxopibizu.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/ab0b105d299ec8245b46eb7b7935463b/fefivi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=imovie+for+ipad+pro+tutorial+pdfPDF 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_off0000f1cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000109dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109DD 17028 bytes
SHA-256: 44757e062d59b0e014b627096e1d0d4e8b6c824031ce2c1030dc1d1ac558bee0
font_02_sfnt_off000135da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135DA 10504 bytes
SHA-256: 3ebcc6d15fafc94835c0dfe9bcf16c85711af8c50ad67be13d75b798526a5be2

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