Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6c1d01f8df6e98e…

MALICIOUS

PDF

85.8 KB Created: 2021-06-30 10:08:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 889195066c95ceca061d9a3f1b1e7031 SHA-1: e29617a43438d07f9fce7d3d5989e6f41692786d SHA-256: d6c1d01f8df6e98ed53353fddab7d4d6422fed3dfb43bde8434e1e446c8a9075
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and exhibits characteristics of a ClickFix social engineering attack, instructing the user to execute a command. The document also contains numerous links to external sites, many of which appear to be compromised WordPress installations used for hosting malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://gzky.cn/dubeite/ckfinder/userfiles/files/20210628_195929.pdf In PDF document text
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/9c741a69b06f698c2490ed75df610867/82012895823.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0fbd8f30a---gekuzopetatimavadegule.pdfIn PDF document text
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/eqdqmpeisonv6lam9ggf556be8/26472774850.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/16098f8265cbfc---gatafipidedefavakufej.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe29e1d6d0---kasotu.pdfIn PDF document text
    • http://asustainable.com/global/file/nevaze.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/d5ce97a13b133e29d7a0188e417dfd75/ririwo.pdfIn PDF document text
    • http://garmagostaran.com/Upload/file/xisenodojatipiganujipek.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ab36e098c05---jawonabadozoge.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b1d150ced9---kavat.pdfIn PDF document text
    • https://alatheir.com/atheirwsfiles/file/kuzakegivubebem.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076a15e95ea7---27153909125.pdfIn PDF document text
    • http://best-infosystems.com/userfiles/file/72921048004.pdfIn PDF document text
    • https://octvads.site/js/ckfinder/userfiles/files/nelaf.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/0b16ec575e48c8e91b7499e81d0f452d/71889084292.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd3a13f772---pitavapep.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/fd54d82181b27a756dac7f53ee2d3e8e/66800142538.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/d2c8f4cf29f60e5ab224121a91bf89c4/ralopuvoribugegamipale.pdfIn PDF document text
    • http://www.anjhimayath.com/upload/file/rutomepajedu.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/52fd83108e401a76aa9ec8714d506602/bazosusovageg.pdfIn PDF document text
    • http://raczcsalad.hu/files/redajoxulibojoviva.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/rebim.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=bash+if+with+commandPDF 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_off0000e863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE863 18128 bytes
SHA-256: 732e1a115f429fd17f0bbcc6e26eeec3fca298bb007321adb5eed2890d635dc7
font_01_sfnt_off0001185d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1185D 10600 bytes
SHA-256: e07be473531ba4a368a762ca9d3a4d22b65363462c91128b28ae84791f738750
font_02_sfnt_off00013085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13085 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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