Malicious PDF — malware analysis report

Static analysis result for SHA-256 27c1d94c98e0c8f1…

MALICIOUS

PDF

84.6 KB Created: 2021-07-17 05:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 08131fb8c58d92449b53487a6690c5e3 SHA-1: 320a3e457fc49d02f68be9724afef19f53dad946 SHA-256: 27c1d94c98e0c8f1a12df5bd98b24c60240978bc339aa639c81518330cfc096c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous links to external websites, many hosted on compromised WordPress sites, suggesting a link farm or redirection mechanism. While no scripts were explicitly extracted, the nature of the heuristics and the embedded URLs indicate a likely intent to redirect the user to malicious content, potentially for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://awlights.com/wp-content/plugins/super-forms/uploads/php/files/2a3229dd67dea9430c12c28cf16dcfca/15284181848.pdf In PDF document text
    • http://project-lovcen.me/userfiles/file/jewap.pdfIn PDF document text
    • https://bhavalaya.org/ckfinder/userfiles/files/75546182852.pdfIn PDF document text
    • https://lukili.ch/UserFiles/files/7093456703.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081032f1baed---motupidazilojadiwo.pdfIn PDF document text
    • http://daglichtfilters.nl/ckfinder/userfiles/files/vafanebu.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/7718573736.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b4c47d7ead4---dazigenulepovo.pdfIn PDF document text
    • https://mabuksusu.com/contents//files/wowaviwuwixojozivolusezer.pdfIn PDF document text
    • http://architettoangeli.it/userfiles/files/temajeda.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///92836965916.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6374ec750a---dupirit.pdfIn PDF document text
    • http://seoulmenu.com/uploads/files/nedakixoj.pdfIn PDF document text
    • http://myarrahnu.com/mo_images/files/70106879194.pdfIn PDF document text
    • https://marosme.ro/hirek/file/duveviziwawojidured.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160815d12d6510---37582853020.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/494stpu35rh0dud2f6in85qnrm/73099524032.pdfIn PDF document text
    • https://aydin-elektrik.com/resimler/files/82564771012.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cf46d2325---90519246599.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8039035f16---zebubufututojafitakafudox.pdfIn PDF document text
    • http://www.darvidproperty.com/news/file/defawojuju.pdfIn PDF document text
    • http://anandamsanyal.com/userfiles/file/80703475292.pdfIn PDF document text
    • http://youngshiny.com/userfiles/file/1621943021.pdfIn PDF document text
    • http://harchovyk.com/userfiles/file/fuxawevegikobugab.pdfIn PDF document text
    • http://matrainagycsalados.hu/userfiles/file/mirezukadal.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=german+english+dictionary+onlinePDF 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_off0000e5c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C7 17156 bytes
SHA-256: 6763f8229813a3003fbfaef845503048c129bae2e2384cc38d5b7441c0eccedc
font_01_sfnt_off0001121d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1121D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A34 10972 bytes
SHA-256: 2d8c4e4a3c8b4b7554bbfa38628c7132cabdb3682bd724d493c80960a4701c0d

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