Malicious PDF — malware analysis report

Static analysis result for SHA-256 187c7b6b698e2e29…

MALICIOUS

PDF

96.3 KB Created: 2021-06-27 03:55:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 9f0feab6e474aeff6bf866892ad6f2b6 SHA-1: 71e27c200e839259f2529100fdd400b355343fd7 SHA-256: 187c7b6b698e2e291d17a4173eb3fbcb89ebbf55fbc119090a6996c621682edc
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links, many pointing to compromised WordPress upload directories, suggesting it functions as a link farm to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160753c2fdc250---39681044439.pdf PDF link annotation
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160be152b83116---nerovegusomunewiburol.pdfIn PDF document text
    • http://sistersaviopublicschool.com/userfiles/file/vubipipawu.pdfIn PDF document text
    • https://mannerfeltdesignteam.se/ckfinder/userfiles/files/9776807475.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/1840fa3726ef53c7a2d6db886bbbf63e/42720188343.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/84663848601.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///30634293003.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/3a521c8a568a63e314162a8d99ca32e8/10067251338.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/efc137363098769c7548b561d5801953/94009993035.pdfIn PDF document text
    • http://dragonera.cn/admin/userfiles/file/xazefip.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/7f4bfa50305705eb6be53c4a69473577/livuxevogesexilemamatope.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/60c0c65a1f654d788a1a5e678ee47a3c/mebogifexim.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d89d5251e---45911209461.pdfIn PDF document text
    • https://gionggiacam.com/ckfinder/userfiles/files/votisorupodoridewija.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160710440c71af---6539656914.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6405847693---29610090298.pdfIn PDF document text
    • https://oncallanatomist.org/ckfinder/userfiles/files/27659235605.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/22d9d46101b8f58a7622c97cc97c3104/widamom.pdfIn PDF document text
    • https://glycocalyx.nl/userfiles/image/file/78770058594.pdfIn PDF document text
    • http://barcabianca.eu/upload/file/39544922353.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606d127255c99---86661869635.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=the+angry+scytheclaws+wow+classicPDF 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_off00011628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11628 16912 bytes
SHA-256: 377490f7ee77eeeb727af6eb16dfc11f9599a0d6f730b9092d1e23a3c9398c26
font_01_sfnt_off000141e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141E6 10672 bytes
SHA-256: 7b3caafce1e99469e14ce63bb2b189396630196063dae95c63a7516ee9dd87e2
font_02_sfnt_off00015a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A67 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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