Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b0aafb2e9b4cdd3…

MALICIOUS

PDF

90.3 KB Created: 2021-07-07 12:13:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-16
MD5: 560596d8d068164b9cd4871bad4273a8 SHA-1: 68823b370894c8d71f519ea84aacf5b43dcd277f SHA-256: 7b0aafb2e9b4cdd351c41e995b01f8f79a71a533cbf7981a2e258d0b5ee4bc7e
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607bfd4ae797c---zudokawazowezupiz.pdf In PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160799afcdeb39---31034135928.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/3957740d9a66b1a456a3770c3f1624f2/pibufozukifimunimop.pdfIn PDF document text
    • http://ildungrice.com/fileupload/fckeditor/file/vinezagi.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607cfcefeb1c9---luxawerel.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/4851e607ebe2d03c68070bb646d4fde4/39511063685.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/9ee642573d4cb382fa0d3e4549111b68/92107884394.pdfIn PDF document text
    • http://pekingtogo.com/uploads/files/mukesuvitebe.pdfIn PDF document text
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/jnm7ikvlglf6mh4epjs1omjat4/fojanifazuwel.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/c4e8fc816581a7ee33a3340b072734a9/vegigilobakoralekejodafe.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de689f3189f---5569441197.pdfPDF link annotation
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/k0oi4hdmln7abdvkt3l7dcmlg0/65957625251.pdfIn PDF document text
    • https://munord.com/wp-content/plugins/super-forms/uploads/php/files/dfd13f6cf638fc517c868cc38140e80a/472685033.pdfIn PDF document text
    • http://moto-bike.pl/userfiles/file/32365658617.pdfIn PDF document text
    • http://52.74.160.208/ckfinder/userfiles/files/xopitusibito.pdfIn PDF document text
    • https://www.justgym.co.za/wp-content/plugins/super-forms/uploads/php/files/emah6b067qk8e3eftmrimlkatr/60604133410.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b655e5ee14d---41080740100.pdfIn PDF document text
    • http://raisemoneyonline.org/clients/6/69/691275cf9a36cab982b2498ebdc715be/File/mobolexu.pdfIn PDF document text
    • https://zweefvlieg.net/userfiles/file/81528737572.pdfIn PDF document text
    • http://smartvoicecom.com/userfiles/letiwajakuga.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b84c84a8ff2---kulogule.pdfIn PDF document text
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/dfg4qldl2dq3djlq56vboc7dgk/xudebazazejutadudekopus.pdfIn PDF document text
    • http://fontanarosaserigrafia.it/userfiles/file/31784384961.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/aa083aa3a237524c4fe83dd29f572d4c/dinuluze.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab562c8d22d---maluwonepigo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+get+a+lot+of+stardust+pokemon+goPDF 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_off0000fc22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC22 17248 bytes
SHA-256: 842003a7b507e9ab7128aa9252054330f9f256d96e4890da7eddbb04d15be3ba
font_01_sfnt_off000128a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128A4 11016 bytes
SHA-256: 99ebfcf6a2ecd9789c5b007ca9da2d500ca4f78f6a1e9031b58594d8763ee500
font_02_sfnt_off00014220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14220 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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