Malicious PDF — malware analysis report

Static analysis result for SHA-256 32928517da093416…

MALICIOUS

PDF

69.5 KB Created: 2021-09-03 02:02:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7e68e707aa70cb4142ca98e307cfcbf6 SHA-1: 47447162761fa03197b33a27cc89cab7d1afe33c SHA-256: 32928517da093416440a6d1b7903a638427a35c6dc141c6a8c6e7ed948d8402f
164 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains embedded JavaScript and numerous external URIs, many of which point to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The embedded JavaScript likely facilitates the redirection or execution of further malicious code.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://pistant.ru/uplcv?utm_term=policies+and+procedures+manual+for+nonprofit+organization PDF link annotation
    • http://xn----7sbbbizu2bxaod.xn--p1ai/userfiles/file/90472297575.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/d1mk6jl662v681u9o0omnd5cst/negegegofu.pdfIn PDF document text
    • http://www.lugashotel.com/data/editorfile/20736229391.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607da53448efb---vibupebololu.pdfIn PDF document text
    • http://vankouwenenmastop.nl/UserFiles/file/58505591391.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/32913506919.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/lt8qqhbn3b10sq9a7fme6iq286/26781372172.pdfIn PDF document text
    • http://apvn.info/userfiles/file/52151444948.pdfIn PDF document text
    • http://villapellegrino.it/userfiles/files/jopufiwufitu.pdfIn PDF document text
    • https://beruanglucu.com/contents//files/70259258745.pdfIn PDF document text
    • https://spbmworld.com/anaeter_capital/siteadmin/userfiles/files/pejidivadudunifutufozol.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16108f19546c52---nanalogumiriroj.pdfIn PDF document text
    • http://transsnabstroy.com/userfiles/file/sujavogedidosebukufa.pdfIn PDF document text
    • https://www.herewardcarpets.co.uk/wp-content/plugins/super-forms/uploads/php/files/q4hgpqvkg4sdp7egngkv83rp9d/54965960009.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/2021717119491088.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/67550499608.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbc9a5972c---guvasagowozife.pdfIn PDF document text
    • http://w3-japan.com/js/upload/files/62049992258.pdfIn PDF document text
    • https://luyenthitoeic.info/userfiles/file/36956470251.pdfIn PDF document text
    • https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/14608c15b4bd27512cdbeb67fcd6fc75/30850941925.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/c5d51876496ea64baa822ab0c26becdf/14083685896.pdfIn PDF document text
    • http://emannsltd.com/userfiles/25408490936.pdfIn PDF document text
    • https://churchofgodinjamaica.org/app/webroot/files/17549478188.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/dlrmpefa9jr85euj1k5iebif12/79848285035.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

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_off0000b1c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1C2 14584 bytes
SHA-256: 1569804cb1adaf5215b80fcee1dc1dc4f78ee8f87997661ff6811fd9d815ead1
font_01_sfnt_off0000d5f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ee0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0D 11124 bytes
SHA-256: e4ef09c2c4ccd6d24b266a207e721ef57c94959d93ce3806450e5ec2ae99e014

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