Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f49e26aeb29ac7a…

MALICIOUS

PDF

70.8 KB Created: 2021-09-04 18:47:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 465d96764c115357d2eaba020f022618 SHA-1: 006a9e7f1df981eed90fe3082bd0ee0c9f9c879f SHA-256: 6f49e26aeb29ac7a39a6473a98afc17b12c13177220fdbbccd479f36be946e61
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document functions as a link farm, containing numerous URLs pointing to various websites, some of which are hosted on compromised CMS uploads or disposable hosting. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links suggest it is designed to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • 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.
  • 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://servmed.net/userfiles/file/kapaxurimikiguzuwepilivaf.pdf In PDF document text
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/b91pr0a9ota8n0b91a5ln5krb7/2196082416.pdfIn PDF document text
    • http://dblbtech.com/userfiles/file/fimidedur.pdfIn PDF document text
    • http://axwelindia.com/uploads/27431525451.pdfIn PDF document text
    • http://herningbadintra.dk/app/webroot/upload/files/34057203297.pdfIn PDF document text
    • https://dm288.rs/slicice/file/52174738947.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/92fiq36jq7cq66jc0871cljkk4/jebevil.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/1d5cb616f92a179a120f9f9dffcfac8a/68182672609.pdfIn PDF document text
    • http://h-st.nl/bestanden/files/66513218134.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a97b02e4264---65538012266.pdfIn PDF document text
    • http://washchienluoc.com/upload/file/jiwadilowazitux.pdfIn PDF document text
    • http://crystal-lamp.ru/uploads/files/vafawulosajeguj.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606da53da5a1f---41184878263.pdfIn PDF document text
    • http://lammermoor.net/imagenes/file/nutojidilik.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/161265b6e57fb5---52781875844.pdfIn PDF document text
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/157e9e95324585bd8059e9fa69ba858e/xuvokivulagadiledep.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a1beace00c6---zopafewanevit.pdfIn PDF document text
    • http://coumert.com/images/file/wokajolamogafidoj.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/d7f8952b188546ac2ff43de1faf48aed/dilefijivo.pdfIn PDF document text
    • http://sunwisechem.com/Uploadfiles/files/6007412679.pdfIn PDF document text
    • https://afra24.com/basefile/afra24/files/93674845557.pdfIn PDF document text
    • https://qeyeoptical.com/ckeditor/ckfinder/userfiles/files/64382802582.pdfIn PDF document text
    • http://hagelkonzept.de/userfiles/file/12913626649.pdfIn PDF document text
    • http://vanphongphamhienluong.com/upload/files/lasimejigumuloxilukudor.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=all+haryana+gk+pdf+downloadPDF 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_off0000b23c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB23C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ca53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA53 10560 bytes
SHA-256: eb801b94177522d28c830f96a84355c92b7e17d122dfc638e6ceb4ca8b9c2b74
font_02_sfnt_off0000e223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE223 16884 bytes
SHA-256: 58ea125d9a51b2151d3107790cbec6b1dadf616f160df11a4be9cec0538e19cb

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