Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01afd5b3ef5b80a…

MALICIOUS

PDF

147.6 KB Created: 2021-07-22 15:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 99da2d6ad7ee4a0ebdecc8145544b088 SHA-1: cdfc233fb009f3867f7070313ca963c75ce44413 SHA-256: b01afd5b3ef5b80a6a3909f2d7b706ae4010d8bdde344c4879990a0568c6b86e
96 Risk Score

Malware Insights

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

The PDF file contains a link farm, with numerous embedded URLs pointing to compromised websites and disposable hosting. These links are likely intended to redirect the user to malicious content, such as phishing pages or malware downloads. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

Heuristics 5

  • 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://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/a7083d5e717e293b81bb13d9cb679343/xasopikigutadexafep.pdf In PDF document text
    • http://megat.pl/uploaded/fck_files/file/jepadejetipatudupukoru.pdfIn PDF document text
    • https://viettincapital.vn/upload/files/95387533765.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3da161e7e---retonipep.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/df759ae54d7d26d96897e0e6a56dc454/baneladagoxud.pdfIn PDF document text
    • https://echipamente-scule.ro/userfiles/file/gufew.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c84c1def10f---53980432653.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/telajewitototoludosene.pdfIn PDF document text
    • https://grup-insaat.com/userfiles/file/23850733302.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16098df6e7078f---pivamobarinonugu.pdfIn PDF document text
    • https://www.ltgpartners.com/wp-content/plugins/super-forms/uploads/php/files/19f0ff1f0a435712cb9f9a41a04468ac/37254931761.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abe6db2d447---sexisat.pdfIn PDF document text
    • http://gelikonline.ru/content/Files/4702211758.pdfIn PDF document text
    • http://ville-dammarie.com/ckfinder/userfiles/files/11222123813.pdfIn PDF document text
    • http://skonasystems.com/userfiles/file/32872937577.pdfIn PDF document text
    • https://divinenine.net/userfiles/file/duxuwejabamoto.pdfIn PDF document text
    • https://remoteyourstaff.com/calisma2/files/uploads/jozuvogiguruxerikekepix.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/3019df9b314ab813d8d0470e0bca7d15/58918961275.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160b15d1dd415f---4114497513.pdfIn PDF document text
    • https://zlatartopalovic.rs//files/setiboxadopapugosorutoraz.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/siguwakuzilidakinugoli.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/84335079553.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609b37d135fc7---nugovarunopivowix.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/16099c832472fd---30959073394.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=elements+of+chemical+reaction+engineering+2nd+edition+pdfPDF 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_off0001d8e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D8E6 11172 bytes
SHA-256: 51146ac376d8840b991aae13aa46fce701bb257e7ca3d5835ff69b6edec2d1ed
font_01_sfnt_off0001f2a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F2A4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00020ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20AB6 20428 bytes
SHA-256: 24e64b049af1d8114d4db25af9f853e2f3b3ceb60c910d6b9f3b0dc81e2b6566

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