Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d9c34cab873ea0…

MALICIOUS

PDF

85.2 KB Created: 2021-08-23 13:55:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7260951b03ccf52966ac66209d1de8a4 SHA-1: 79adb8cebfd47d9f0f5e78adecdc75a5f037cc78 SHA-256: 94d9c34cab873ea0b8ad1f4a875adf9cd307ecdf6475a13a7546edc8fcf74e48
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised WordPress sites, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect users to malicious content, likely for malware distribution or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 https://laborke.ru/uplcv?utm_term=kingroot+the+best+one+click+root PDF link annotation
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097c1dad491b---jakuvi.pdfIn PDF document text
    • http://geo-equipe.it/userfiles/files/73682927401.pdfIn PDF document text
    • http://aylincinarli.com/fckfiles/file/41950899502.pdfIn PDF document text
    • http://robalton.es/Albums/images/file///29466245890.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/34454154578.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/p04a1mk1p7pulfr2mdfsrp5hg0/mevebozed.pdfIn PDF document text
    • http://imaginove.eu/data/Files/fafabelotawuxivejapixiki.pdfIn PDF document text
    • http://massimobertoarchitetto.com/userfiles/files/xaxazavaloraderimoda.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/3bc6d5f9d7c1d2555308621f7d9023c7/65384008753.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/0a0e10b47ca16ee930653f33b04d193e/bajuravawego.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cc7b93cabdb---70579707458.pdfIn PDF document text
    • http://diversecityuk.com/userfiles/file/vugorirufuxunoxe.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608e061dc8321---gefafapekomipeliditel.pdfIn PDF document text
    • http://banphimchuot.com/userfiles/file/gusaxoremufufatipu.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16121b455a9c25---bitemokonafumozefivozej.pdfIn PDF document text
    • http://jtylek.pl/Upload/file/49760136723.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/nabilupurakepufiz.pdfIn PDF document text
    • http://ytbozhuo.com/upload/file/010219569714.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160e25a3420f1e---mikij.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/pp44h3l1grp1ttddln1qj58rks/89684695080.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/4588e2c629e1c49bdc4acbed4a034f9e/18139938327.pdfIn PDF document text
    • http://studiolegalebisantis.it/userfiles/files/83178339793.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_off0000eb4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10363 10572 bytes
SHA-256: 0df04a106bd4533ec9aec426392dfb4833653c01767cbdfe82068f8ff0aecbcf
font_02_sfnt_off00011b65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B65 16960 bytes
SHA-256: fc789c08237c13000fc0ce91a77682ef5e5efe21d251ca728a8b84d601942646

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