Malicious PDF — malware analysis report

Static analysis result for SHA-256 0922915938444802…

MALICIOUS

PDF

85.0 KB Created: 2021-09-01 05:34:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 686000012e6068c7547cb68106c839f5 SHA-1: b06e26863b2c5e0b0d4c4d5edca44619f70abda1 SHA-256: 0922915938444802937b6cef946685b6ed1833b6a98516727b4c26b5e579fd73
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains an embedded JavaScript stream and numerous URLs, many of which point to compromised WordPress sites or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a link farm designed to manipulate search engine results or direct users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/q2mf9unecm4bq060lbidpoar13/wevisas.pdf In PDF document text
    • http://colorfulmedia.de/fotki/fotki/file/81098571112.pdfIn PDF document text
    • http://josepholszowka.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wijonixomogejolexivi.pdfIn PDF document text
    • http://hanarotalk.com/userfiles/file///45548495225.pdfIn PDF document text
    • http://arniestribu.com/campannas/file/rakunusizepixoregoxiwivam.pdfIn PDF document text
    • http://paintmaster.hu/js/ckfinder/userfiles/files/15820462677.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/edd752fc9df36f75643699fbf808d60b/xufifebusupelutedadusaje.pdfIn PDF document text
    • https://acgroupenterprise.com/userfiles/file/xozon.pdfIn PDF document text
    • http://agendaalzheimer.org/files/galeria/files/wexan.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/1c20026215403bc396d803aac7a4f70f/potetureg.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086c4f26041c---puzobibavarom.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a4198a8b0a8---64932224528.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/d425e85f2c8886f88b41cb96c5f5df38/16438410928.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/b3eaf1d32125edd8201983c565f86b0f/vuzitanetemumukulomurix.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bc27ed57943---81523186971.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/hf31837e19b3gkm8j8ms2r5la9/nasofafisuwepiwibamawiw.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/16091908b725bb---nisixuxifutofolizis.pdfIn PDF document text
    • http://ristorantebiscione.com/userfiles/files/nonufabositor.pdfIn PDF document text
    • http://geoplan.su/userfiles/file/suzubenusojodara.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4bb70058d---39105421705.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/1efb1b9ba699f66aaacc934722624829/54699075060.pdfIn PDF document text
    • http://aliguoriarchitetto.eu/userfiles/files/fubuxufe.pdfIn PDF document text
    • http://alexdisinfestazioni.com/userfiles/files/58214825735.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/33768406833.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c455de66b2e---kavuroduwezomak.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=live+streaming+film+comic+8PDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE702 17476 bytes
SHA-256: 572fe59b52d58f635343acdc4446291e11c2a271999c1ce4d17c6220dea19f13
font_01_sfnt_off0001146e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146E 10912 bytes
SHA-256: 95c7c854f1f1766ec1deccedc6172d54b82d3dee51a20917be8d0e2f2feed206
font_02_sfnt_off00012dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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