Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1215500da581e27…

MALICIOUS

PDF

80.1 KB Created: 2021-06-26 14:25:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: ba8d38ef30266a6714b260e9fd5464fd SHA-1: 4281e1a4a1ca9f34da6ada232993e00b9edd555c SHA-256: b1215500da581e27ee37493a93a7756ef53fdd2333e4c90634998e360a4943ac
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites and disposable hosting. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests malicious intent, likely to lure users to phishing sites or download further malware. No scripts were extracted, but the extensive link farm indicates a phishing or distribution campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4208

Heuristics 5

  • 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
  • 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://pixomot.ru/uplcv?utm_term=boiler+control+system+engineering+pdf PDF link annotation
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/a0a3c065d075837081ab97ce1889dba1/31333239618.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/4435986467.pdfIn PDF document text
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bd487d73d05---molulipele.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/af3b0e76d8460f910fe62ee873640f3a/2012368796.pdfIn PDF document text
    • https://betentour.com/sites/default/files/file/tejuduxemuvadubotubakere.pdfIn PDF document text
    • https://hglobaltourb2c.com/FileData/ckfinder/files/20210614_1EFA47C17444ECA8.pdfIn PDF document text
    • http://www.kilincsweb.hu/fileok/file/15665343767.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/38180e7e828278ee7d30ad575daf3ab4/86575810682.pdfIn PDF document text
    • http://ghioroiu.ro/sites/default/files/file/90942265431.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16083fe71ecfb7---20613754088.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/41e7bf96342465c21252b4ef7a9a0abb/69995226722.pdfIn PDF document text
    • http://teaandtiarasottawa.com/clients/e/e8/e8f54e69a7463df9fd0adff13cd8e90f/File/45424052519.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090060cd408a---53901159401.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a43277d29a2---turipifipebakoxemavixaru.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3ab00c941b---2826075706.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/4cfa3b40ee655c62da96f64fc85800d4/dotifobepuvatutamaganiw.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/e2353403cf73d79409367a7bf17636d3/fumekudugaziz.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab3ff476ba1---kitep.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608af4d0cd0e3---kavetujiwomow.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/c7d36690277ea2d841342f2bffabf389/72202417561.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/59d210af8f26941bc7cfb443afb9ec9f/80085082632.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/7a06055eb3263669237a0c217778d9cd/80197887048.pdfIn PDF document text
    • https://dubaimotorcycletours.com/uploaded_images/files/30022777572.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/79620408744.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/8de0918492b406583a34fb87a3fa1d2a/18381436204.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f59a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF59A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DAC 16700 bytes
SHA-256: 0e141d7752b004a4a8a157e1c4b3a61f9396180d3c25d759216a990228af8be0