Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d3e7891eeab2560…

MALICIOUS

PDF

91.6 KB Created: 2021-06-26 00:17:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 1cac2c422ab477fa18e58fefdbd06ff4 SHA-1: 6fbf03da1a9c948e19c85c6e0d526eb717a91883 SHA-256: 5d3e7891eeab2560db0db318b9cd9c9b2b530fa63c7686043f3b27e60a69503f
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to compromised websites, likely intended to lure users into downloading further malicious content or submitting sensitive information. The PDF structure and embedded links suggest an attempt to exploit user trust through a deceptive document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/nbj6blmqvgh87fhshm1n7pnsjf/peladuwugonaduf.pdf In PDF document text
    • http://baigeleather.com/userfiles/file/wasetobojejugawigewatupil.pdfIn PDF document text
    • http://hungbuloon.com/media/ftp/file/99326440213.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1609d408f0d9be---21198901834.pdfIn PDF document text
    • http://meruzhankhachatryan.com/app/webroot/files/file/84222851847.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a638516422---81788757412.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607562dd88d2a---47687733569.pdfIn PDF document text
    • http://aprendanow.com/wp-content/plugins/super-forms/uploads/php/files/695dcf9c6f5c6a810980158ab2b3820f/96610500231.pdfIn PDF document text
    • https://natyabio.com/uploadfiles/62920426559.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/mrmv6j2jcaikjfad4f6ndllbc5/veludon.pdfIn PDF document text
    • https://avonsteel.com/UserFiles/file/dupugubuxojemixufukifafi.pdfIn PDF document text
    • http://dalaichau.com/files/rotonut.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609499489dcc8---todisawujivudo.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084e5a563fdb---44910992400.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/tm8m2omvitl6035c0gua4da2r5/97464414782.pdfIn PDF document text
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/70f92972d2310cb60ffcd328986b3450/wunurezapej.pdfIn PDF document text
    • http://businessplan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/82831487760.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3a8a1ac2e---gorojawumabefokajemasopa.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/d422cce3243d58dce7958e2bcab9b071/15010874314.pdfIn PDF document text
    • http://placc.info/up_image/20169893060.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0d8a2cd6b6---mawajelunobov.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/af392a3480533ee6f204d80c67468b3a/labapus.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=turbidity+in+water+is+due+toPDF 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_off00010490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10490 10600 bytes
SHA-256: 0679485784fd97b68860e6b771038371fe8be351c641bc9a2a7f43d9ac388507
font_01_sfnt_off00011cf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF9 17032 bytes
SHA-256: 16f63ce574661290c497d7db5841a5e84496da9aaa8708413ee77019400a983c
font_02_sfnt_off00014986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14986 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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