Malicious PDF — malware analysis report

Static analysis result for SHA-256 1015ed7f086d5095…

MALICIOUS

PDF

99.2 KB Created: 2021-06-27 23:38:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 25faed8cbb9aca0207fd87490959f8b4 SHA-1: 5cfc88b9000c4ab007880901cf238a9d509ad1bc SHA-256: 1015ed7f086d5095fb799ac6c82f735db65acfef6b62c60a291e967b2dde0e00
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised WordPress upload storage, suggesting a phishing or redirection scheme. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to lure users to external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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 http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/16086226ebdc7d---majobazitave.pdf
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160722b73789dc---76447515281.pdf
    • https://isleo.com/i_photos/file/50229762440.pdf
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/a3890a880269b6a6a68f2671e4874b04/19131579265.pdf
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/6c7231c46fa9288273cc8c2ddbacea73/geratafigizaditola.pdf
    • https://allmassage.net/upload/file/20210506235951.pdf
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606f14f538e05---7624373009.pdf
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad486d693c9---nodobewerikawesixonafa.pdf
    • http://bagiez.com/userfiles/file/jimaworek.pdf
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608030cfd7040---12388333567.pdf
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ae90aa4474a---tisadovanogolasifusu.pdf
    • http://barudan.hk/UploadFile/file/20210521182142975.pdf
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/f117cf410cbfb8615b491cd6aeead560/42789678811.pdf
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160c9752df2478---dukoxotekelojudo.pdf
    • http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b1292a494d---roberaxeli.pdf
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f79966fce5---widemujuxirepevi.pdf
    • https://protradingindia.net/userfiles/file/bijutenoxonexumorakuge.pdf
    • https://baptistfriends.org/media/danibutetefabawe.pdf
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608576c9a7285---gikupuval.pdf
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076d39d2bf3e---78670018036.pdf
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/bclbnhi5t8iut55touujm17ken/zevexabes.pdf
    • https://motelandratecuci.ro/userfiles/file/melefigimomaxomipelokogo.pdf
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/5f140592d480229348df92d86759192c/gepomirawumevagumomulores.pdf
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/0c998ac3438fee5578b7e066bf534e7b/34453294399.pdf
    • http://korean-school.hu/hangul/userfiles/file/81607962915.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=social+work+policy
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000124c8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124C8 16792 bytes
font_01_sfnt_off00013cdf.bin
24497f51e4d816502df64a67ecb0cbb6d9ad3200ac44dbb0e4a4f9a4204a81f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CDF 10232 bytes
font_02_sfnt_off00015402.bin
087eb775251a7313263aefdae49482acdf9356beb7ff9c79d150045dbe3c8208		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15402 16856 bytes

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