Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f14bf80d8cdc89d…

MALICIOUS

PDF

82.0 KB Created: 2021-08-07 16:46:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a2e2d043c1df4645d2c080fac1e89465 SHA-1: ee9d74086df1db093271a3a52c7ecd97d26a0a1b SHA-256: 2f14bf80d8cdc89d270f5e2a8e76dea123e43fc0f13a90cc3432c87f138c54a4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1055.012 Process Injection

The PDF document exhibits characteristics of a link farm, with numerous embedded URLs pointing to various domains, some of which are hosted on compromised CMS uploads or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure suggests an attempt to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://virtualpulse.eu/UserFiles/file/67518283504.pdf In PDF document text
    • http://bocghedanang.com/media/ftp/file/7935593951.pdfIn PDF document text
    • http://fbrasil.com/userfiles/file///jazekibe.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16096b5f18940a---82077313766.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/40248244617.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-5-26/20210526093528401820.pdfIn PDF document text
    • http://floridadressyourhome.com/uploaded_files/userfiles/files/buvaseratunanokuzeri.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/73udmh7p32lrplbuca0j5hvg5c/24427838909.pdfIn PDF document text
    • http://haai.org/upload/file/doguninixigavogusuzor.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0c6659ff84---notafitunawakupat.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/909a885494a7cb4e8563a21f95d1c54c/70734464800.pdfIn PDF document text
    • http://salocchi.it/userfiles/files/4934279109.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a72b4b00483---jujurow.pdfIn PDF document text
    • http://ruresept.ru/files/file/60106173716.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b11c0007bef---55092910725.pdfIn PDF document text
    • http://deeringbayrealestate.com/userfiles/files/55280303004.pdfIn PDF document text
    • https://vico-immobilien.com/ckfinder/userfiles/files/tixatuzuk.pdfIn PDF document text
    • http://dioceseofniranam.org/userfiles/file/52960677085.pdfIn PDF document text
    • http://muzycznescyzoryki.pl/userfiles/file/dofexowotidimerefi.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/qedkqnsaojr8799mtd5o1vg5m0/79644839823.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/o6bb0r7sub7pavic5dht5a8ccg/wakememejowazafarujinava.pdfIn PDF document text
    • https://mobiligennari.com/userfiles/file/futafudidajasebuxevivekim.pdfIn PDF document text
    • https://eminenceconstruction.ca/viking1/uploads/files/26253277218.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=libro+de+inmunolog%C3%ADa+abbas+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_off0000d5d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000edea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEA 11000 bytes
SHA-256: 95309ee87b101a80791011735f4479e88f83eda8a022f0590a580eb20e199423
font_02_sfnt_off000106ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106EE 18708 bytes
SHA-256: 3571b3971bb073aa969bf5eb46d788edeb280e61bd499c03dae3adc3ae08c70f

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