Malicious PDF — malware analysis report

Static analysis result for SHA-256 006bcfcb35e3f8ef…

MALICIOUS

PDF

97.6 KB Created: 2021-07-05 07:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 61c01d14879e59db9a477ee7a5956e54 SHA-1: ca2e889e88eba9ed090c2f4ae3c986c9e47047be SHA-256: 006bcfcb35e3f8ef31a4365f9b340e14a47757411983b19eb9fc17be94f8f6ee
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous external URIs pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure indicate an attempt to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://nomylo.ru/uplcv?utm_term=britney+then+and+now PDF link annotation
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607318f84ad26---muzaxawidupuxopokagif.pdfIn PDF document text
    • https://ost-fogging.com/upload/files/88415714400.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160afff920a745---47109160921.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b46f258c057---rexemirorek.pdfIn PDF document text
    • http://zdrowejaja.com/Upload/file/kusawepaxenunoziruteduk.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/e02482c924e159579cfc7f93eb2129fb/gujikejewuda.pdfIn PDF document text
    • http://rgn2u.com/userfiles/files/25163526125.pdfIn PDF document text
    • http://insidethedigitaltrend.biz/userfiles/file/fabobabo.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609440c6a5cc2---wosine.pdfIn PDF document text
    • https://condicionamentofisico.com/arquivos/file/43306682969.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/7b113ca83bd014636c4b7750940f4df9/ranaluwokeroge.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/9181d4265894057741f5922657cb6201/susimepotamevamixonod.pdfIn PDF document text
    • http://penzionklara.cz/userfiles/file/98353603529.pdfIn PDF document text
    • http://sentezetutmerkezi.com/upload/ckfinder/files/21751651067.pdfIn PDF document text
    • http://12shio5.com/contents//files/62977055428.pdfIn PDF document text
    • http://viajesalaos.com/webroot/img/files/77001917689.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c88610163b6---69037036450.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16073c17556150---jolaxilujoravupel.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160978894715b4---nesotinejafepizoserufom.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160b2f0c48b229---lujuxu.pdfIn PDF document text
    • https://aurorabersinar2.com/contents//files/6268649161.pdfIn PDF document text
    • http://www.firengo.com/userfiles/files/dawilosisinodo.pdfIn PDF document text
    • http://avstralianature.ru/ckfinder/userfiles/files/96255561713.pdfIn PDF document text
    • http://kamkmori.cz/ckfinder/userfiles/files/pisavufowovapomopetomut.pdfIn PDF document text
    • 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_off00011c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C8A 10384 bytes
SHA-256: 9f5bd05c47951a72ca59449d4619ad1edc29549a30357a88cfa1a731bc8002c3
font_01_sfnt_off0001340d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1340D 17200 bytes
SHA-256: db4abc6c8493c0a4b16b296b5e23f4e607c8213d91a1342be0f6dac0f2db1373
font_02_sfnt_off00016142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16142 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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