PDF malware analysis — malicious · 7d67f5dd9525253b

MALICIOUS

PDF

76.2 KB Created: 2021-09-01 10:09:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: c04bc1ac9a8820d6f355b1c2087dddc7 SHA-1: 00acb2765e0a1e13128f1ad5a7c97a50cc7e4de7 SHA-256: 7d67f5dd9525253b7a2ab434adecfa19f9ff7e30377eb07ec7a0ada1d2110dd7

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to compromised CMS upload storage or are part of a link farm on disposable hosting. The ML classifier strongly indicated maliciousness. While no scripts were directly extracted, the structure and numerous external links suggest the document's primary purpose is to redirect users to malicious sites, likely for phishing or to download further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9908

Heuristics 5

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://coretry.ru/uplcv?utm_term=shawn%27s+chimney+sweep PDF link annotation
- http://studiolauramoschini.it/userfiles/files/xexizenet.pdfIn PDF document text
- http://ylpqzl.com/ckfinder/userfiles/files/19487617542.pdfIn PDF document text
- https://clubforeducation.com/FCKeditor/userfiles/file/70556239316.pdfIn PDF document text
- https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/hrqvect0vk9ht0ch534fuvappp/wobowefafuxolonatape.pdfIn PDF document text
- https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/9af84b299e82159ad7977c4a196d301e/71404429661.pdfIn PDF document text
- https://kiaavcilar.com/upload/ckfinder/files/26467860687.pdfIn PDF document text
- http://vtdsbinhthuan.vn/public/uploads/userfiles/file/velifujubokemutigaranid.pdfIn PDF document text
- http://clingac.com/d/files/6525689635.pdfIn PDF document text
- http://aaykpn.com/uploads/editor/files/51432187711.pdfIn PDF document text
- http://castanienfamily.com/clients/74558/File/vuzusokesewinori.pdfIn PDF document text
- https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/t63vpqkinf9djtfg12tst9shp6/25884531219.pdfIn PDF document text
- http://phatnang.com/media/ftp/file/86020300574.pdfIn PDF document text
- http://hoadon-dientu.net/images/files/14301017405.pdfIn PDF document text
- https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16096538d6b6bc---78418863051.pdfIn PDF document text
- http://fotografoenricogiampieri.it/userfiles/files/jotux.pdfIn PDF document text
- https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d83ba81f2f---43027006233.pdfIn PDF document text
- https://oxi-dental.ro/imagini_ws/72091478520.pdfIn PDF document text
- http://capesociety.ca/uploads/files/nodusafuforofodi.pdfIn PDF document text
- http://omgmediatank.com/userfiles/files/5686723152.pdfIn PDF document text
- https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab3cf8815e---jolatumodewuripuj.pdfIn PDF document text
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609b7d4f9fda1---9429842867.pdfIn PDF document text
- http://szyuangang.com/UserFiles/file///geruwipowa.pdfIn PDF document text
- http://bangladeshceramicsociety.com/uploads/editor/files/13189236923.pdfIn PDF document text
- https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/22c90542d68ead1cff17ed5cfebf9a43/xuxoxuzelumetisoferipev.pdfIn PDF document text
- http://inter-travel.hu/_user/file/ladivomiwuromopupewikipaz.pdfIn PDF document text
- https://bedandbreakfastchia.it/userfiles/file/92483314380.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c7ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC7AB	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000dfc2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDFC2	10584 bytes
SHA-256: `5baa7fb99d1bff3162c178f6ec119dcb628c9af7ca72ac6a861bf3c3d55f1417`
`font_02_sfnt_off0000f7d1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF7D1	16720 bytes
SHA-256: `f2a6ce3e848826f6608f74b6c3f4abf946bab78faf5844e28f341467a9ea3183`

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