PDF malware analysis — malicious · 20a9378494ad7404

MALICIOUS

PDF

89.5 KB Created: 2021-08-12 14:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 4ae98a6853469bf537192ad82e7e1beb SHA-1: 22d9af4be3d988ae4dc9df35af258264a36d2055 SHA-256: 20a9378494ad74041b3ad3564f9fbeddb6d9fd8e2897b3c9164d4c2b25c84e3e

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links pointing to potentially compromised websites and disposable hosting, suggesting a link farm or phishing lure. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malware distribution or phishing campaigns, likely delivered as a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9954

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://4grd.com/cmsimages/file/68060269762.pdf In PDF document text
- https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609a1dae8b844---58403120029.pdfIn PDF document text
- http://lica-mpt.it/userfiles/files/11656606837.pdfIn PDF document text
- http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16114a9b17a525---wobuwejifaw.pdfIn PDF document text
- https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/538d060e029c666c9f6809282760bd8d/81723125058.pdfIn PDF document text
- http://studiotecnicodavico.eu/userfiles/files/33963669538.pdfIn PDF document text
- https://leonardscopysystems.com/home/leonards/public_html/ckfinder/userfiles/files/47791468491.pdfIn PDF document text
- https://associazionedynamica.it/uploads/file/tekof.pdfIn PDF document text
- https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/16098341e0c41e---14846638431.pdfIn PDF document text
- http://rulife.ru/ckfinder/userfiles/files/59386655618.pdfIn PDF document text
- http://srihemkuntsahibfgp.org/hemkunt/userfiles/file/52261009622.pdfIn PDF document text
- https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/49cada8f0ffa2b942b6222d1c4456e31/jenev.pdfIn PDF document text
- https://coastalholidayproperty.com/ckfinder/userfiles/files/legasawogekenibuginete.pdfIn PDF document text
- http://sourceit.ke/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/37511163416.pdfIn PDF document text
- http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160a9aa989be53---soperopozugusijope.pdfIn PDF document text
- http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608718501fd7e---46357755116.pdfIn PDF document text
- https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160861bd890743---robugijagadexus.pdfIn PDF document text
- https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/6658336832d82d5ab43f1bf5dbf4e76c/zenumamuwijapa.pdfIn PDF document text
- http://wuxihemei.com/ckfinder/userfiles/files/20210605_021207.pdfIn PDF document text
- http://amandatravel.com/userfiles/file/8058372621.pdfIn PDF document text
- https://garnet-medical.com/userfiles/files/juxujifubumodom.pdfIn PDF document text
- https://equator-maritime.com/userfiles/file/tenaniparukani.pdfIn PDF document text
- http://akcjonariusz.com/UserFiles/file/52360582284.pdfIn PDF document text
- https://1877painters.com/FCKeditor/file/garobupaxumezula.pdfIn PDF document text
- https://branchennachweis.eu/userfiles/file/tovowawexobiwisitadonol.pdfIn PDF document text
- http://freeski.hu/freeski/file/xakanusonikokebuv.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=automate+the+boring+stuff+with+python+practical+programming+for+total+beginners+pdf+freePDF 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f2b4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2B4	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010acb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10ACB	11488 bytes
SHA-256: `e09048cdcfa48078211504cde7d6a77c5da400ef61ac8f1e5653a21fa3667135`
`font_02_sfnt_off00012575.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12575	17812 bytes
SHA-256: `a0525a78df7552abc065ba8db1acb6a64fafd96efd753585f8b6b59c9247969a`

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