Malicious PDF — malware analysis report

Static analysis result for SHA-256 342d290bbac18793…

MALICIOUS

PDF

502.9 KB Created: 2021-06-28 17:05:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 88f2c8646ef5db49fcb816def292cb4b SHA-1: 3e2be44ad7f64926154cb24bd764ad67a4ec7b18 SHA-256: 342d290bbac18793695f62eb6535865857ebf67989461bbe6f625853fe08f275
166 Risk Score

Malware Insights

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

This PDF document utilizes a link farm pointing to compromised WordPress upload storage, disguised as a free download lure. The primary URL, 'https://drafthe.ru/uplcv?utm_term=theological+doctrine+meaning', is identified as an SEO redirector, indicating a phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to deliver a secondary payload or lead to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8470

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://drafthe.ru/uplcv?utm_term=theological+doctrine+meaning PDF link annotation
    • https://fonixkoncert.hu/upload/file/87258946918.pdfIn PDF document text
    • http://amuseonline.com/absite/userfiles/file/80574062421.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160d8cd41a5707---nenolobab.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609da8c73ebeb---99284923855.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/0b74e8f435fc469bc7363796e6e6ecb9/zebige.pdfIn PDF document text
    • http://cuatudongnhatrang.com/uploads/files/23115651839.pdfIn PDF document text
    • http://rlangkhan.com/upload/userfiles/files/ravidupikureb.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b659a94e3c7---4334933628.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d23a90be83---razinexovumulo.pdfIn PDF document text
    • https://consurs.ro/ckfinder/userfiles/files/gewomoduxemarezekukexir.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/346741df2cfd3491210daa5d95f35120/wejejifaranixe.pdfIn PDF document text
    • https://proxus.nl/file/60590774718.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607967a2a005c---dulab.pdfIn PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/avvsot0cdbuc26cqdjrkb0tm87/3927919438.pdfIn PDF document text
    • https://x-software.cz/data/file/66135138081.pdfIn PDF document text
    • http://synergyproperty.com/images/files/20516755739.pdfIn PDF document text
    • http://toonesk.com/upload/17670159059.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a72cfc65405---94688162530.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606feef930008---72119191735.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/ma7p42prt9s3uoa5ifjam69u33/84311548566.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609c2f8399705---38331867358.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1608b708a18677---rikebuvimimo.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_off0007626e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7626E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00077a80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A80 25724 bytes
SHA-256: 77a1915ec32eaf76934c8f9949ed6435171aaa6552b3ae2aeb6703030cff8aa7
font_02_sfnt_off0007b27b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B27B 10612 bytes
SHA-256: 22a5b15661ac9874f7fc481a4d33377b854c8db6879c8ab98d961318ae352778

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