Malicious PDF — malware analysis report

Static analysis result for SHA-256 7059627363a7ab4e…

MALICIOUS

PDF

81.3 KB Created: 2021-06-30 10:18:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: e84afe6c1dce973b85b18695f55e67d2 SHA-1: 297bcd440e06f4834116b11edd38cf86fef6ff79 SHA-256: 7059627363a7ab4e665cc02f9c20684fb1ba9f3a8288ae28f9e28f4f5812bfd3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The heuristics reveal it functions as a link farm, with multiple URLs pointing to compromised WordPress upload directories. These links likely serve as redirects to malicious or phishing content, a common tactic for distributing malware or stealing credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9933

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 https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/e039af25133aff80aa16116f194b5c96/fujovuxunitem.pdf In PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fb53dbb364---legovewejutek.pdfIn PDF document text
    • https://songhong.info/userfiles/file/61196048200.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/7d2b6de1046962c653e7ade801ba2e64/67342508551.pdfIn PDF document text
    • https://samsungdvmklima.com/upload/ckfinder/files/24660487779.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/falirasugaw.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/a786f50dd4d995570555eb5c08214944/pepafemegobozoxojizukeze.pdfIn PDF document text
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b377403bd2e---katomet.pdfIn PDF document text
    • https://pmcp-avac.com/files/upload-ckfinder/files/vawexewabodageko.pdfIn PDF document text
    • https://rybczewice.pl/userfiles/file/44780678080.pdfIn PDF document text
    • https://creteotels.gr/FCKeditor/userimages/file/fegazojowiponilomovederid.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/gobokoxeludebasefogimox.pdfIn PDF document text
    • https://sport-jicin.cz/dokumenty/golokogifovoxajunadu.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/r1sqe451svuq7ms8fdtbig26s1/bukorakuxeb.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160706c7616bd8---74698703428.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b03db6e3f4b---28434688238.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a67ddda16b8---29668317380.pdfIn PDF document text
    • http://studiotecnicoforace.eu/userfiles/files/52301863543.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16078939873965---ladofujolitotir.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160799eac8c1d0---winobotuvetemokajaxiwevu.pdfIn PDF document text
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/123463b130b1fd3ff51930459d48f4f4/55958335460.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/0e49e1273dac6d7370460446c68be706/setujeduxu.pdfIn PDF document text
    • http://mimarkamilozkartal.com/userfiles/files/pivizu.pdfIn PDF document text
    • http://msinziniering.com/userfiles/file/99325850258.pdfIn PDF document text
    • http://vladjurnalist.ru/archive/file/runikanemamufepuleku.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=i+hate+this+worldPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000ea55.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xEA55 18392 bytes
SHA-256: 95a4ca200764b3b9c6ba232b73ffe4e6ad044421d33a264f635c313dbb9c345f
font_00_sfnt_off0000bfe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE1 16436 bytes
SHA-256: 76f790010771f46e3149028a865c451b32a88d8088788f0cd92dde2125eccfda
font_02_sfnt_off000106f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F9 10280 bytes
SHA-256: d42b132b0485afc38111153923acaab218641cc56e9f57b15426058682d75b2e
font_03_sfnt_off00011e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E4F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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