Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9c0827f5f37e4f…

MALICIOUS

PDF

83.0 KB Created: 2021-09-14 09:46:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 3441a489299884c453797da2af4e5a9c SHA-1: 0da306c6d7355af3edeb9b88f56b4cbf638d581c SHA-256: ed9c0827f5f37e4fde38713058bc2a75ade6f4fa632018b3890aab616030e39f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to various domains, many of which are flagged as link farms on disposable hosting or compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were directly extracted, the structure and URL patterns are consistent with malicious PDF lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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://baodieptailor.com/uploads/2021-09-12/images/files/18356213752.pdf In PDF document text
    • http://easytravel63.ru/ckfinder/userfiles/files/kegesalolebolanoxiganu.pdfIn PDF document text
    • https://semut73.com/contents/files/bozibivodof.pdfIn PDF document text
    • http://pekingtogo.com/uploads/files/xogug.pdfIn PDF document text
    • http://hidramaco.com/files/files/42768518016.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/gikegifutad.pdfIn PDF document text
    • http://prochem.vn/images/uploads/files/diviparozikab.pdfIn PDF document text
    • https://comobrew.com/newsite/images/user_uploads/file/97092555685.pdfIn PDF document text
    • http://ziva-muzika.cz/files/file/51409705465.pdfIn PDF document text
    • http://ivelinabozilova.com/userfiles/file/64411962136.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e051820465---88289792476.pdfIn PDF document text
    • https://shiprapublication.com/uniformkontakt/userfiles/image/files/30129978432.pdfIn PDF document text
    • http://mehmetrasimmutlu.com/icerik/file/58654339507.pdfIn PDF document text
    • http://leebyunghun.org/new/upload/board/files/bodadajifetugomezatower.pdfIn PDF document text
    • http://www.swaving-stalinrichting.nl/ckfinder/userfiles/files/xabarigamebolinagexele.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/16133c0640c11e---fikapedumidenad.pdfIn PDF document text
    • http://tieuhocsongphuong.hoaiduc.edu.vn/ckfinder/userfiles/files/takikodovigonajata.pdfIn PDF document text
    • https://nissanzorba.ro/ckeditor/ckfinder/userfiles/files/puwujebomebetudokekiruwop.pdfIn PDF document text
    • https://tpijobportal.com/ckeditor/ckfinder/userfiles/files/rarujirinuguvi.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613382fde2255---jovowuvikeligedakasev.pdfIn PDF document text
    • http://rigdrilling.org/userfiles/file/pakolurinupebekaziwidesu.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/3b451f66d2983ac52f4e562e2107676c/sutorigetezunebosexaxok.pdfIn PDF document text
    • https://rumusjitu.com/contents/files/72378302597.pdfIn PDF document text
    • http://runhouchem.com/upload/files/52225258341.pdfIn PDF document text
    • http://caerulumpharma.com/upload/files/ladinubezogofejuliropedis.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=no+time+to+die+movie+watch+onlinePDF 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_off0000de5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5B 10496 bytes
SHA-256: 48d0e1c512d31e52bf518cb3970bfaf8fca5aebd4aecff5fdac4b106200d0b84
font_01_sfnt_off0000f610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF610 18448 bytes
SHA-256: 05d651e5a075dd9946eaef446bf2de56bc5ec360f754eb0fd121738d0369d3a2
font_02_sfnt_off0001268b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1268B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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