Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2e6d15e7587a164…

MALICIOUS

PDF

74.2 KB Created: 2021-08-13 06:54:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 27ecb78591ab5e812d413d2bd86a3c71 SHA-1: 7a71bfb76215c1c5b5e53218675e371a9f47b3d6 SHA-256: c2e6d15e7587a164e0d7e5790f0a865d5e0ae40949e33456bd5e9c70fb067aea
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the structure and embedded URLs point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 http://gamjagolla.com/uploads/files/natenogajorifiwuwalok.pdf In PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160961be2d3c20---24010999234.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/4ba43dca7aa3018b9544e3bdbd42dbca/zeviloro.pdfIn PDF document text
    • https://digireg.nz/upload/pitowisujijemara.pdfIn PDF document text
    • https://aviseco.ro/userfiles/file/panetuxekefomos.pdfIn PDF document text
    • https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071aa66aa169---wimat.pdfIn PDF document text
    • https://liffeyartefacts.com/fckimagefile/file/jeposetaxanezitefofuba.pdfIn PDF document text
    • http://studioambienteterritorio.it/userfiles/files/gukudazuke.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/1030ff40f83da2f13a162ff9f84fb289/18126478674.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/b1aed26fae0a1ffddc0f7159710e0943/ximofikuvezibixamuvap.pdfIn PDF document text
    • http://omegapizza.net/uploads/files/zedasarabewanu.pdfIn PDF document text
    • http://steps4cancer.org/clients/a/a7/a78c374070a178914b502abaf3db82b8/File/litadumelaxetozevoke.pdfIn PDF document text
    • http://alliance-vietnam.com/upload/files/bokogevurapixafalibivevo.pdfIn PDF document text
    • http://lakes77.com/clients/47041/File/rifiguvureb.pdfIn PDF document text
    • http://hanhthien.net/uploads/file/vixerutuxiwazakojunoja.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/8618cf8923cdfb9be0570393d77b4348/motofej.pdfIn PDF document text
    • http://gruppocreta.com/userfiles/files/mugilivumotawofofoni.pdfIn PDF document text
    • http://odumakus.com/uploads/files/10630465761.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608663fe27b06---vakowasinezotasebebaku.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/savukaxinetokonutumefij.pdfIn PDF document text
    • http://paroissedementon.fr/upload/files/binoba.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/427d8e88e3dc61286671f2c21f9dfc41/93737279555.pdfIn PDF document text
    • http://headrepublic.pl/images/files/63327100939.pdfIn PDF document text
    • https://poolpoint.be/uploads/file/lepit.pdfIn PDF document text
    • http://gyarmatilovastorna.hu/userfiles/file/lovajidorowavibagu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=manual+de+procesos+de+reclutamiento+y+seleccion+de+personalPDF 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_off0000c1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B6 10884 bytes
SHA-256: 2bbc13c805662fdf501b8aafb3e7e6bd9041f2a21f32bbceb78090e259365689
font_01_sfnt_off0000dad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD6 14976 bytes
SHA-256: a16eef8894c25165bac9e8b066571fc6b222a9437243354de16d2cb5c4ee53f5
font_02_sfnt_off0000ffd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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