Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b2e009209931827…

MALICIOUS

PDF

88.5 KB Created: 2021-09-08 09:16:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 1b6a440c531ae0f7a4150ed5a8a17004 SHA-1: e525054992f259ab8de246d05ba9b60bd054e187 SHA-256: 9b2e009209931827377abc7dfa25b3a7bc4817ac15b7ba66dda2ae552cb25a6d
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The primary attack pattern involves luring users through a malicious attachment to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://files.ibiza-ferien.de/file/wujamakopu.pdf In PDF document text
    • https://luminex.pl/upload/file/lofaworidilenibelifas.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/762fe809588462acca886337ce711e12/43476309117.pdfIn PDF document text
    • https://hasekei.jp/userfiles/file/saxofupivuvolorova.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609876929707e---monuwesog.pdfIn PDF document text
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6b3d963a3a70bbc8dc2a21994fc48ae5/logarugoduwudojonutapa.pdfIn PDF document text
    • https://pjkconstruction.ca/images/file/62546946428.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/5c92dd226fe6df5460fd6e7e765e1e53/18200113734.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100655aec320---36889934924.pdfIn PDF document text
    • http://artside.org/data/temp/file/42694828157.pdfIn PDF document text
    • http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/lowifokukipebekigomageru.pdfIn PDF document text
    • https://mmszke.hu/files/file/lupivaxizepafefuxiv.pdfIn PDF document text
    • https://paeonia.ch/userfiles/files/39741306519.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/kvlfenqjnn8nitb613i121ae9k/bojibugov.pdfIn PDF document text
    • https://danielstrehlau.com/userfiles/file/wodituka.pdfIn PDF document text
    • https://faprosid.com/file/kafopoxe.pdfIn PDF document text
    • http://kulturazebrak.cz/userfiles/mumidogena.pdfIn PDF document text
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/21lvg0rlfkgg0id7nbav63b012/69096884963.pdfIn PDF document text
    • https://sinarwaja.com/account/files/36003413810.pdfIn PDF document text
    • http://naszymsladem.pl/upload/file/woban.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/q7ncq2lt660k16sfqs0gjjs5e7/83168846191.pdfIn PDF document text
    • http://say-international.eu/userfiles/file/wumutulemolapolivopuvola.pdfIn PDF document text
    • http://klimatyzacjaradom.pl/userfiles/file/37576700627.pdfIn PDF document text
    • http://pleasanthillpchurch.com/clients/5/55/55aa087cacc886b2254ddcc242c0699b/File/durunem.pdfIn PDF document text
    • http://msamericapageant.com/clients/873634/File/13906891215.pdfIn PDF document text
    • http://lhdrum.com/User_File/UpFile/file/20210831202204_NDEwNzQ1NTM2MTU=.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=fender+acoustasonic+90+owners+manualPDF 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_off0000f0f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10905 18908 bytes
SHA-256: 52957f6bda92d0c2ae53e3d2b11f9a974937f4980d6ee5bcd5b656ea591f0562
font_02_sfnt_off00013a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A9F 10984 bytes
SHA-256: fb4866405a110d0dcdc2ed1b965a76822e8bf0e847acab52e190d67dce914651

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