Malicious PDF — malware analysis report

Static analysis result for SHA-256 34be41d6bb64943e…

MALICIOUS

PDF

82.8 KB Created: 2021-09-04 21:11:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 75eeb7405a0d5368444c6dc672f93bb1 SHA-1: 5637d0f68338d63ab6bee90da2b1a0dbe6c2aef6 SHA-256: 34be41d6bb64943e98a166a75dcf204ae4b596d7c2b11d1992eabc2ec3dc7202
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting an attempt to distribute further malicious content or phish users. While 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 0.9846

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://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5aa9954797---81723070185.pdf In PDF document text
    • https://ladangmimpi2.com/contents//files/30147996776.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/44bda45cd3f27294e699edd556f1dda7/susojamerixewijikiziber.pdfIn PDF document text
    • https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/0ou9prmkigetoc2dj6gq2sef6j/24277715525.pdfIn PDF document text
    • http://videofilm-tv.ru/content/File/duxigosuvubowoni.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16108266aead19---1269899219.pdfIn PDF document text
    • https://nabsangram.com/userfiles/file/41881321246.pdfIn PDF document text
    • http://naturalmis.com/userfiles/file/79044796281.pdfIn PDF document text
    • https://francoisdaulte.com/ckfinder/userfiles/files/guruki.pdfIn PDF document text
    • http://kistours.hu/userfiles/file/88913269853.pdfIn PDF document text
    • http://aerotechgroup.ru/img/outer/files/74696447976.pdfIn PDF document text
    • https://cavalier-hundezucht.ch/userfiles/file/tuzefewifexegekiz.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c30b7c7c7a4---dafebenunixebozekaxuzi.pdfIn PDF document text
    • https://jooli.ru/ckfinder/userfiles/files/47632646350.pdfIn PDF document text
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077de1187c51---fazesuzixax.pdfIn PDF document text
    • https://adepotcustom.com/UploadFiles/file/20210717185236149.pdfIn PDF document text
    • http://nordicaluminium.ru/userfiles/file/nelizuboxigopupemix.pdfIn PDF document text
    • https://cmetrix.net/ckfinder/userfiles/files/pubuxajaw.pdfIn PDF document text
    • http://architects-desk.com/uploadsfile/75893238347.pdfIn PDF document text
    • http://registermycompany.in/admin/userfiles/file/2477855541.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/3eba91abb8c597681e5b3c1c19aa8890/nojana.pdfIn PDF document text
    • https://doxity.ro/ckfinder/userfiles/files/jepujenaruporulumap.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ac15bd768ec---53526054096.pdfIn PDF document text
    • http://annandale1963.com/clients/69704/File/72869791604.pdfIn PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/4dc56266afd576ad0c4ad4a2c0d11c11/pilizokib.pdfIn PDF document text
    • http://www.sec-ollivier-associes.fr/www/upload/file/70670569774.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=solving+systems+of+equations+worksheet+algebra+2PDF 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_off0000d97f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97F 18704 bytes
SHA-256: bfebab61254d1be64c477aec721737e153d512cf1ae3f507d58b26a28530c42b
font_01_sfnt_off00010a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A37 11600 bytes
SHA-256: 3598c736d4ca8a5ce4c9ea1e0a1a0db9340d347e8696f43cff736dd830d76b8d
font_02_sfnt_off00012569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12569 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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