Malicious PDF — malware analysis report

Static analysis result for SHA-256 056bb5089e02e448…

MALICIOUS

PDF

84.9 KB Created: 2021-09-15 14:30:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 05d3673c8c262849284db8c40380a429 SHA-1: cb6c955914f1806b9d979dc878f20bc75d85ec14 SHA-256: 056bb5089e02e448fc4d6608f94935ac3da24b278ae7dffd99fbccb004b3f385
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. It also features a link farm pointing to various PDF files hosted on potentially compromised or disposable domains, indicating an attempt to distribute further malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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 http://watch62.ru/files/files/jebojarapujesi.pdf In PDF document text
    • http://rafaelokazakov.com/file/gekimodawebumoda.pdfIn PDF document text
    • https://www.fyna.com.au/application/third_party/ckfinder/userfiles/files/bemivatavotorobenawemiso.pdfIn PDF document text
    • http://hk888.edo2008.com/com/comimg/file/20210914_061342_102.pdfIn PDF document text
    • http://theorientgarden.iorderfoods.com/uploads/files/foxunixaj.pdfIn PDF document text
    • http://www.ufolep-69.com/contenus/files/66984329433.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/3gr9hg43er584rn5bso4ot6nsb/xuritosoxobidi.pdfIn PDF document text
    • http://www.hro.ait.ac.th/js/ckfinder/userfiles/files/gasusubem.pdfIn PDF document text
    • http://findingthegrey.com/userfiles/file/86881169229.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613697faa7da1---63575054262.pdfIn PDF document text
    • http://robertwestlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/10514375971.pdfIn PDF document text
    • https://palcev.ru/userfiles/file/nuluzutezigafujopigiwikor.pdfIn PDF document text
    • http://studio-castiglioni.com/userfiles/files/vujowise.pdfIn PDF document text
    • http://www.motionmantra.com/userfiles/files/duzujiz.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/161356ea5f3328---63879753487.pdfIn PDF document text
    • http://www.oneworldkarate.com/fckeditorimages/userfiles/file/giligunetovokofivagetesap.pdfIn PDF document text
    • http://krr-nfe.com/suratnfe/UserFiles/File/55832450585.pdfIn PDF document text
    • https://incoyun.com/calisma2/files/uploads/fowudofegikitamudufi.pdfIn PDF document text
    • http://hoclaixebinhthuan.com/upload/contentFile/file/mowufomoxolamunugikuzines.pdfIn PDF document text
    • http://wuxihemei.com/ckfinder/userfiles/files/20210911_042658.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/hfj5bp900bqppcjusl9fg9agb8/femuvogitijonejeb.pdfIn PDF document text
    • https://srinivasagroup.com/ci/userfiles/files/betuneredolidixisova.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=dawn+awakening+apkPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDD6 10072 bytes
SHA-256: f3c4c7b8e1c44b037779f4ccfdd387b449845dc2f7271e39f1e8952f025d6684
font_01_sfnt_off0000d46b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD46B 22960 bytes
SHA-256: 1c90db9129fa063c011acb4f9603e7b0f7f595168f654452f48756d3b6228d97
font_02_sfnt_off00010eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EEB 1888 bytes
SHA-256: 228445a3744f13af4bf84041e55802a923554d86926eb0745489ea117e4ab105
font_03_sfnt_off000117af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117AF 16132 bytes
SHA-256: 071bac7a3a90310621307d68123817e30fba7c89f9e5021c4391eb43bd8b9137
font_04_sfnt_off00012d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D26 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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