Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca448abed35b27d…

MALICIOUS

PDF

78.0 KB Created: 2021-09-16 14:45:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 4a4b0e8ebca50752eaaeae3e0aefb233 SHA-1: 7110e8aa04e91c456ec44a4b61a9009b05a0d7f6 SHA-256: 0ca448abed35b27d4ecc2f01bb905c2a3df0c088a0339c0abd0273a2905b4d58
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It functions as a link farm, containing numerous URLs pointing to various domains, some of which are hosted on compromised WordPress sites or disposable hosting. These links likely lead to phishing pages or further malware downloads, aligning with the characteristics of a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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=factory+reset+a+locked+android+phone PDF link annotation
    • http://rbtyutj01.com/userfiles/files/4448827429.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134037888011---11843826306.pdfIn PDF document text
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/bumefagatopiterudigez.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161312ba3a7dde---34166137288.pdfIn PDF document text
    • https://lekkermooi.nl/userfiles/file/moguvotusotewosogezoforu.pdfIn PDF document text
    • https://tapuionoticias.com/ckfinder/files/pumidofajugarisogajovi.pdfIn PDF document text
    • http://encino.kopanramen.com/uploads/files/vulebuwumixeb.pdfIn PDF document text
    • https://astoraccessories.com/uploads/ckfinder/files/baduvarulagovufikefaseve.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16136c08435f19---24755148657.pdfIn PDF document text
    • https://habibitours.com/ckfinder/userfiles/files/58437760009.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1613a90559dc46---16737406724.pdfIn PDF document text
    • http://bainihu.com/upfiles/editor/files/tenegoli.pdfIn PDF document text
    • http://marklaliberte.com/fckupload/file/96347573637.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/161361f6549fe7---dowuvijunomupumifis.pdfIn PDF document text
    • https://congnghiepxd204.vn/upload/files/lixixupogibexubeb.pdfIn PDF document text
    • http://safetruck.gr/images/file/24539868379.pdfIn PDF document text
    • https://horgaszvelem.hu/ckfinder/userfiles/files/76581840701.pdfIn PDF document text
    • http://2m-m.eu/userfiles/files/58736227442.pdfIn PDF document text
    • http://good163.cn/Uploadfiles/files/wibegejujubo.pdfIn PDF document text
    • http://alexdisinfestazioni.com/userfiles/files/47270569384.pdfIn PDF document text
    • https://mandaljeebanking.in/ckfinder/userfiles/files/59848082821.pdfIn PDF document text
    • https://paidionresearch.com/userfiles/files/29603778347.pdfIn PDF document text
    • http://podlahyadvere.sk/editor_uploads/system/files/jibatuzupobujabavadezize.pdfIn PDF document text
    • http://meyergarden.com/ckfinder/userfiles/files/32657914893.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_off0000cd2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD2C 17116 bytes
SHA-256: d0d4038ac410081c94bfcabcc16506e95e4920125d20ba82bb772169a47d6dea
font_01_sfnt_off0000f998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF998 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000111af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111AF 10796 bytes
SHA-256: 2f774c4cf0b5ac3e120fb0582742461b030cd4d4e1aefd5861285c634cf177cb

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