PDF malware analysis — malicious · 959f00a01edd4e73

MALICIOUS

PDF

86.5 KB Created: 2021-08-04 03:56:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21

MD5: 9a5b295ea6d9fa037b6998a848680ed9 SHA-1: 5362608957b5b300b4d0f41548c93443fbbc0a6a SHA-256: 959f00a01edd4e7325ccfc64947ff8a173f57c0f206ea7921f10d80160d59739

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm hosted on compromised WordPress sites, likely intended to lure users to malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to exploit users through deceptive links, aligning with phishing and potentially further payload delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add2998730b---8940909846.pdf In PDF document text
- https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a41b06d94bd---25728392652.pdfIn PDF document text
- http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/16081767cdfc59---mibivixo.pdfIn PDF document text
- http://stlukesfp.org/ckfinder/userfiles/files/pezotoxusasode.pdfIn PDF document text
- http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a537bab6a25---waxusunupojelapimevafu.pdfIn PDF document text
- http://adamlegal.com/userfiles/file/19202193129.pdfIn PDF document text
- http://artanuji.ge/admin/ckeditor/ckfinder/userfiles/files/jaxiterifivozediviwosef.pdfIn PDF document text
- https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/2b94b488ca1bf89d8a2c7d909829a279/81148383165.pdfIn PDF document text
- http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1608b5d07e14af---fademilova.pdfIn PDF document text
- https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a703c1aaf30---81244482405.pdfIn PDF document text
- https://mokhalasati.com/userfiles/files/tutejewigepugorel.pdfIn PDF document text
- https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606f62272032f---18505723004.pdfIn PDF document text
- https://hglobaltourb2c.com/FileData/ckfinder/files/20210726_5A0AB2CBA05C7591.pdfIn PDF document text
- https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/8275e8079dfe00cdf63c63b5e437b616/nejojufewitelegafedubetew.pdfIn PDF document text
- https://soliangco.com/contents//files/29822203998.pdfIn PDF document text
- https://cicadit.ro/UserFiles/file/visatepitudenaresagajilu.pdfIn PDF document text
- http://ackerviewguesthouse.com/userfiles/file/15007138380.pdfIn PDF document text
- http://rucodelniza.ru/userfiles/file/48967770364.pdfIn PDF document text
- https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4328830a43---kewazuzil.pdfIn PDF document text
- http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c654bb04fb0---siwolejotetofogigawurob.pdfIn PDF document text
- http://artside.org/data/temp/file/51490460484.pdfIn PDF document text
- http://namngonviet.vn/user-/files/kijopam.pdfIn PDF document text
- http://polskienarty.pl/data/aktualnosci_imgs/file/zuzokasaduwat.pdfIn PDF document text
- http://sashtraayurveda.com/ckfinder/userfiles/files/vatofopiz.pdfIn PDF document text
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/16091b38754e68---fiviroketuwikemuluwemuwut.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=ganpati+marathi+song+mp3+free+download+pagalworldPDF 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_off0000ebc7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEBC7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000103de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x103DE	11244 bytes
SHA-256: `caa33cc39d779f1c4bcf612c78199abff2c55110f9ae827c35f0a5f0adcaf293`
`font_02_sfnt_off00011de9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11DE9	17352 bytes
SHA-256: `0bd965dbe177e7214765241b8f3555f3e54c8ea0c46ad5f8cc601988195dba4e`

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