Malicious PDF — malware analysis report

Static analysis result for SHA-256 60c634cb04407aa0…

MALICIOUS

PDF

93.4 KB Created: 2021-07-07 00:57:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: ce93a2bc49a3b256c3f11a8cdc019bff SHA-1: 7f7cb5979a281cc17a770546b085b196550722a1 SHA-256: 60c634cb04407aa0dfbaae3adfa3d2b2a28130795bc0faab199162b6ac58310b
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, providing no further context on the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://dagmar-e.de/userfiles/file/domuwaw.pdf In PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/ea06e5b8b56805a7b912bd5cd544ddd3/lusalabaluvij.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16070dc99188d0---gevirimamize.pdfIn PDF document text
    • http://www.sec-ollivier-associes.fr/www/upload/file/27537169476.pdfIn PDF document text
    • http://matras-devison.com/upload/file/fezak.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a32e2077af1---8740757052.pdfIn PDF document text
    • http://landpas.pl/upload/file/43244916777.pdfIn PDF document text
    • http://vivatbacchus.hu/files/file/vewukinunilipazilonape.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b70064feb---lekeputizeriwubobovevaso.pdfIn PDF document text
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8454e27ce6---fesiwezoda.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/q1sejm9217tjalmiie75b5ur80/saboma.pdfIn PDF document text
    • http://paulsaperstein.com/userfiles/files/porosedo.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a5998490b---13175214604.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e9c73012a---pekujizevipidibixisojo.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2aeef5eda9---28219358131.pdfIn PDF document text
    • http://nsfeed.com/_UploadFile/Images/file/56682656560.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/42915c9d4a056e304f8efb1fff421612/80459110031.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/n412stqf8lntfaa9nbupah7km5/62871538972.pdfIn PDF document text
    • http://pierrevillers.fr/mairie_files/file/77939299052.pdfIn PDF document text
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/b0b1cafed925e98e278ec42d04de3e8e/37899389105.pdfIn PDF document text
    • http://splogservice.ru/content/file/55104978598.pdfIn PDF document text
    • http://brightwayconsultancyservices.com/userfiles/file/43779579300.pdfIn PDF document text
    • https://avvocatoboretti.it/file/22085278878.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=lectionary+reading+for+sundayPDF 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_off00010a19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A19 17524 bytes
SHA-256: c043ce6d9d0b9bb8e18b462168f757a5e4bf5089a8c3af43c5846e2baefd8224
font_01_sfnt_off00013792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13792 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FA9 10776 bytes
SHA-256: a645c31598286ba39bdc1ed1a5bd0c3348d933c3c8ab6321179d33d4df8d185d

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