Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbed78d171883cee…

MALICIOUS

PDF

81.7 KB Created: 2021-09-19 15:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: a3eeead1a547f6320f84c143d9e5c746 SHA-1: 4462fc348655f371fb0c668d458177ee095c5532 SHA-256: bbed78d171883cee686f5e508ff1af40824cc40f9de56a32ec6aa1d6ba8f7dab
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, indicating it functions as a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The presence of multiple external URIs and link farm heuristics confirms the primary attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee0002d9ca---pigopifikufulewajelemu.pdf In PDF document text
    • http://tingchucontrol.com/Uploadfiles/files/73404197677.pdfIn PDF document text
    • https://mmtours.si/uploads/68496768006.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/13773326810.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/cf4469e0827d52c33ceafae6286168b2/bavepasipuzadul.pdfIn PDF document text
    • https://indiantiffin4me.com/nbloom/fckuploads/file/rumesuwujelelifewula.pdfIn PDF document text
    • http://theclubburger.com/uploads/files/suwugadozeperuge.pdfIn PDF document text
    • http://naviway.su/upload/files/30125210637.pdfIn PDF document text
    • http://creativetechno.in/userfiles/file/legasibixifozuneseni.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/142c15aa043d3f3a2f81ef226415519d/tuzavozegise.pdfIn PDF document text
    • http://eotp.info/sites/default/files/fck/file/36604434297.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb0377cf7f---1664491974.pdfIn PDF document text
    • http://i-tos.com/userData/board/file/vebigogosobuzo.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/8fe4181ef1576ed10f855c179d5473b3/popibamigazukaremivukanu.pdfIn PDF document text
    • https://war-old.its.vn/new/userfiles/file/fubewavesazapa.pdfIn PDF document text
    • https://sanipacific.com/attachment/file/37755211694.pdfIn PDF document text
    • http://arhive.np-sp.ru/img/file/22354411097.pdfIn PDF document text
    • http://asacnfservices.com/ckfinder/userfiles/files/buxeju.pdfIn PDF document text
    • http://hongdanhaudio.com/luutru/files/vidirireruzaxag.pdfIn PDF document text
    • http://inistor.com/ufiles/files/nelunurasupikuganibekobi.pdfIn PDF document text
    • http://fatfailogistics.com/fckeditor/files/file/jiferotekugarodujuvet.pdfIn PDF document text
    • http://uniradioweb.info/userfiles/files/87581739383.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cf990c3ab0---jizuwaliba.pdfIn PDF document text
    • http://mesterteto.hu/userfiles/file/32783350599.pdfIn PDF document text
    • https://tmtteks.com/files/61576943850.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=carx+drift+racing+online+cars+in+real+lifePDF 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_off0000db84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB84 16940 bytes
SHA-256: bf07a4932a35bcc4726533cb26ef84216235006260c1549e7f38d025d030eeb2
font_01_sfnt_off000107c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C4 10784 bytes
SHA-256: 2dec65f3eaa659b02b4f0295f0b542e2a9d496a1a51c0696eb85b731b83876f9
font_02_sfnt_off00012091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12091 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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