Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0589b89ff277637…

MALICIOUS

PDF

82.7 KB Created: 2021-09-06 00:27:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7b06c6b79a888ebb3b373218275fb0bd SHA-1: c3514a528123fabc5e4486aa937af43e71117c41 SHA-256: e0589b89ff2776378024d7caa13e45178e1923bf206a08a021ee67fd40fc115a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous links pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content, likely for credential harvesting or malware distribution. The presence of external URIs and link farm heuristics strongly supports a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/160964968ac109---48970953043.pdf
    • http://tunesistudio.eu/userfiles/files/busowenasizewebabi.pdf
    • http://gostinica-domodedovo.ru/files/85673770043.pdf
    • http://bscsaoner.in/ckfinder/userfiles/files/zimeb.pdf
    • http://maasmartcity.com/userfiles/file/13517650778.pdf
    • http://tvsatkrosno.pl/userfiles/file/tepegijedofafa.pdf
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/f59acb8052bdd933da1a78c52210305a/netepiliju.pdf
    • http://turatabor.hu/media/96374038315.pdf
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6b585a8dcf---89875342867.pdf
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/adcb727a941001feecca02bd062bddb9/kojuxepoke.pdf
    • https://agros.net/uploads/file/79230966635.pdf
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b729ed7a24d---kofimirerufazowuvep.pdf
    • http://rklatex.com/userfiles/file/98150044360.pdf
    • https://dadrarad.ro/userfiles/file/36674104156.pdf
    • http://isystemlab.com/admin/ckfinder/userfiles/files/60524977690.pdf
    • https://implant-drill.com/userfiles/file/8762281386.pdf
    • http://dokumsuzgec.com/userfiles/files/xewirarebowasisanud.pdf
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/bd477958fb9fa43828ce099c08384d2b/5322156796.pdf
    • http://b-solutions.net/userfiles/file/85863478727.pdf
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6cb324fbd3---mopikagupabipus.pdf
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c9707fc67cc---lufan.pdf
    • http://fotossc.pl/_files/file/51571314419.pdf
    • https://condominiovillage.com/userfiles/file/foritobonoxuz.pdf
    • https://ngaa.org.au/application/third_party/ckfinder/userfiles/files/muwevisiwetajomipuze.pdf
    • https://jackinthegymtpe.com/uploads//files/202108030825501607.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=fazer+curriculo+pdf+online
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e158.bin
95011a80d4481f6441c7ec25154a2e02a95c83a2d8bb6da254b7a77c2bc1b0d1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE158 10484 bytes
font_01_sfnt_off0000f939.bin
73356f2a0b17962cebf32839aeb660c5d56cf6c5282032230e0c69eeb08d19ef
pdf-font-stream PDF embedded font (sfnt) at offset 0xF939 17200 bytes
font_02_sfnt_off0001257a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1257A 16792 bytes