Malicious PDF — malware analysis report

Static analysis result for SHA-256 247f809f946fbd6f…

MALICIOUS

PDF

85.8 KB Created: 2021-07-02 15:32:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 6f93374274d3505f669c119bc13ed559 SHA-1: b55bd29beb941308089a4d067c075e36fbbec147 SHA-256: 247f809f946fbd6fe39193a1c13fd1cad805a622331dbcd26d09e2eddaa8cdb1
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document exhibits characteristics of a phishing lure, presenting a fake CAPTCHA to deceive users into performing an action. It also contains a password-protected archive lure, suggesting the user is expected to download an archive and then use provided credentials. The document embeds numerous links, many pointing to compromised WordPress sites, which likely serve as distribution points for malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://palaciodelosnavas.com/userfiles/file/dubimevoluzikol.pdf In PDF document text
    • https://daleel.global/wp-content/plugins/super-forms/uploads/php/files/i7t6fv22aia2ldthqvu0jcf2r0/38224924637.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/7b9db86d9c7eb5574f32021cb82c1127/fimimoli.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079a89e0811e---vodizulil.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/06i9a3jaf5s37ap795vroses98/wosur.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/scb0bcliaeto9u4u1v5m8s7qfi/82465552547.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1607b267cd2f7c---64097482723.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090cd2f466c2---fesibinofivonowokazukaro.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/16079b4ff7fc2d---rovusa.pdfIn PDF document text
    • http://runo34.ru/attachments/file/gaxejumonizupifuwi.pdfIn PDF document text
    • https://protradingindia.net/userfiles/file/43819378606.pdfIn PDF document text
    • http://usagimatur.com/files/others/seretanudema.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16081274482a49---wafuzale.pdfIn PDF document text
    • https://cambodiaangkorhomestay.com/userfiles/file/37658246052.pdfIn PDF document text
    • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/bjur3ija25aa2sui3ihkqamkaf/83877211556.pdfIn PDF document text
    • http://dagmar-e.de/userfiles/file/dokelebunikiruvipuw.pdfIn PDF document text
    • http://fzcce.com/aimgs/uload/files/69245311644.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/pdn4pipcbjd310et0nnidcl2fc/505117781.pdfIn PDF document text
    • https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/d4d10905f81c5fadbb27481fb64fa5b8/lamonitatonigekerete.pdfIn PDF document text
    • http://babyindex.nl/images/uploads/94109605094.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/90vtilq6trpdhkb78nvvuqsejr/naposunelexo.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/16085e8ba7cc84---disixexizoji.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/m735oguafmti0huugnqqi9ecau/3530127962.pdfIn PDF document text
    • http://sakem.org/userfiles/files/boniki.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=fifa+game+download+for+androidPDF 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_off0000ec48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC48 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001045a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1045A 17028 bytes
SHA-256: c20f8835d82ed90be42770c642297f0c79b2b93fb2a9d2b53cc4c3d8c21fca01
font_02_sfnt_off000130c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130C0 10492 bytes
SHA-256: 861381eb825389a5f5e5c16a43a3747b5e397819ad595cfa3f37815f7cc6fee9

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