Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb212a352814d9bc…

MALICIOUS

PDF

86.1 KB Created: 2021-06-27 02:28:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 8da56c0d5a1380cf87825090381415fd SHA-1: 2151236d28a76600f24ebb647157904669f82778 SHA-256: cb212a352814d9bc9625a21813d7b0866633b7ed5b78beb3b6a2ee4828a0b12a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous external URLs, many hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The PDF structure and embedded URLs indicate a likely spearphishing attachment used to drive traffic to these external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://oniceh.ru/uplcv?utm_term=will+money+plant+grow+in+water PDF link annotation
    • http://yomamasushitogo.com/uploads/files/26878248950.pdfIn PDF document text
    • http://greenworx.eu/images/uploads/files/jominipesematufiletu.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16085f7ad847be---napufuvemudarog.pdfIn PDF document text
    • https://elminhaj.org/userfiles/file/lajokejidamanapoxem.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b540cebb269---lurikujokazuvonerasib.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac08c1c0208---36406927441.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c406ab49fa5---51278268690.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/mubovixefidepiko.pdfIn PDF document text
    • http://auto-spec.ca/fck/file/ravemepuwagodumigawizo.pdfIn PDF document text
    • https://ropaalmayoreo.com/images/userfiles/file/91000540724.pdfIn PDF document text
    • http://wagnerpc.com/userfiles/files/73632372832.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/fdhlsaenlkt48lnfngh7t24imi/xidowijatujito.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/ec3b8c6868feb165a5424efa4f3da677/21059780898.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/a65efcd75785ba68bfa8de755e84a22a/94051984797.pdfIn PDF document text
    • http://talleresjpg.es/img/file/85987454940.pdfIn PDF document text
    • http://cnc-soustruzeni.cz/files/file/29348810350.pdfIn PDF document text
    • https://universal4shipping.net/userfiles/file/89117527801.pdfIn PDF document text
    • http://bortran.com/upload/image/file/20210523103802.pdfIn PDF document text
    • http://eco-versute.com/app/webroot/ckfinder/userfiles/files/lewotokewaf.pdfIn PDF document text
    • http://sva-jeanroze.com/xmedia/file/93682560137.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/049869e5aa5bb4f9ab251b7a90676ff8/42217630542.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/ejda6dfnvdlrsihebe4r3jk83n/wevaluvuw.pdfIn PDF document text
    • http://e1pl2.nazwa.pl/busy/fotki/file/38801102092.pdfIn PDF document text
    • 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_off0000ee88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE88 10620 bytes
SHA-256: 36156db42881df5d51db9975549be3cad14652a62e8284f524151d5f8bd609a8
font_01_sfnt_off000106ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CE 16460 bytes
SHA-256: 95085a365428f9d7eb8bb54845a175b2e12a867404a59b204e9270fcb57dd7d7
font_02_sfnt_off0001317a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1317A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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