Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c080a6409d5426e…

MALICIOUS

PDF

81.2 KB Created: 2021-07-05 21:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 7731ea9402995a91bce8de5fa0aa0066 SHA-1: f00466acb0766b0c6efe7fb2b74049d4650d19f6 SHA-256: 0c080a6409d5426e46501ea6e2584f368abd849a3f9a1773f6cae3a7ed45ea2b
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports the conclusion that this document is part of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://wastran.ru/uplcv?utm_term=age+of+empire+3+full+download PDF link annotation
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/5ojgv90jgub90orsgn3im22u9f/88752825232.pdfIn PDF document text
    • http://antifftech.com/uploadfile/file///2021051214174780.pdfIn PDF document text
    • http://au-coeur-du-temps.com/userfiles/file/42631953707.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607026a162164---xalunugokomoduxarasawaze.pdfIn PDF document text
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/1ea3e55802e020b2d0855a6afda42307/devorabuvizevug.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160819afac01a6---pikovixuwijej.pdfIn PDF document text
    • http://astro2sphere.com/admin/images/file/binisetufumajuramuv.pdfIn PDF document text
    • http://fautographie.org/images/userfiles/files/batavimakutegoxizod.pdfIn PDF document text
    • https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160abb80566547---6596723392.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ccea34a1ac---22189162073.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/e743a718c6ba3071c2cbf5908a57cbdc/59024086717.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/96178916988.pdfIn PDF document text
    • http://homeopathyhongkong.org/files/detesudatofulediruto.pdfIn PDF document text
    • http://gilendor.cz/userfiles/file/3054656786.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607badf077896---15785785625.pdfIn PDF document text
    • https://makeswebsites.com/clients/c/c8/c8c605999f3d8352d7bb792cf3fdb25b/File/85057420423.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/c2d224a3f2b241b0dc3e5f23fea49e46/bawaduki.pdfIn PDF document text
    • http://mishelik.ru/userfiles/file/givukomonotititot.pdfIn PDF document text
    • http://travelci.ru/ckfinder/userfiles/files/42194447248.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/b3creldo32o3lk7m0hck9ktdfe/52878372473.pdfIn PDF document text
    • http://www.asslar.de/downloads/65870504303.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160d3078f2568f---subezevu.pdfIn PDF document text
    • http://syuncyoku.jp/upload/file/47112633268.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_off0000dc8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8B 10916 bytes
SHA-256: e1f1a6e3bc08b6933e16381da53be77349bd4e9a22e2015c82b7898d3887ef9e
font_01_sfnt_off0000f59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF59F 16232 bytes
SHA-256: ef4701ccc8308999e61c1799380b765567de2c49aacb4271df20c6363b92f721
font_02_sfnt_off00011f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F9A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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