Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a454b7902bb3f2…

MALICIOUS

PDF

98.0 KB Created: 2021-06-28 03:24:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: dc3008b71a009305451d425ec68e9ff4 SHA-1: 37e48b2f3563442f86aff2d5f24c506ed32d9c96 SHA-256: 47a454b7902bb3f225ffd9ce5d22dd353e1a01761192375af194b4851e2d83d3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to compromised WordPress sites and exhibiting characteristics of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or SEO abuse. Although no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

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://alaskacounseling.org/clients/8/87/870ae3779d21e956d596131c1dd113ff/File/sejubewepovosegupuke.pdf In PDF document text
    • http://yaqeen-eg.com/userfiles/file/30034716129.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/nolukaj.pdfIn PDF document text
    • http://massarentearchitettura.com/userfiles/files/43544893073.pdfIn PDF document text
    • http://hasyo.net/files/file/1420737923.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a1ec1d979---vigiva.pdfIn PDF document text
    • http://stalmost.pl/userfiles/file/nojevovabelu.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/8920bc548d070b21decd859335da9713/1872412022.pdfIn PDF document text
    • http://oticonshop.net/ckfinder/userfiles/files/6060576822.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/amof133i86lm91qbtn16t5d4pj/72207501669.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/vmacippq4607jq8f0niprg5ud3/97320247022.pdfIn PDF document text
    • http://abovomedia.hu/_user/file/zizajejiz.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160756f98c0f1c---zofisag.pdfIn PDF document text
    • http://netmutum.com/userfiles/file/55581828659.pdfIn PDF document text
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608cdc66c6593---98342532899.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160796d4b272d4---55313548049.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/xoviwodejinoteleg.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160923737d8283---50271726040.pdfIn PDF document text
    • http://csc0512.com/userfiles/file/20210616034144_orlbk9.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160837105a8882---tagorujuzejoxiwi.pdfIn PDF document text
    • http://gospel-pour-100-voix.com/fichiers/newsletter/file/surijasuzupogo.pdfIn PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e2fac0e44---34803420862.pdfIn PDF document text
    • http://digemnd.com/UserFiles/file/purepepatosu.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/2137659629d5ea10eb6da0a1c123652f/58334179391.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=right+transtibial+amputationPDF 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_off00011aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AAD 10852 bytes
SHA-256: dd57e3971f367bdbc49ba284346636cc58f3afa295d6e07ae85d86972b0ebdc5
font_01_sfnt_off00013349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13349 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B5B 18032 bytes
SHA-256: 98809a4bb54cd3ab91f9e84058c37870cc74191ae4f86b4cac690281bba04add