PDF malware analysis — malicious · c0a53d71919038de

MALICIOUS

PDF

85.0 KB Created: 2021-08-13 02:12:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31

MD5: fc26840571e16166592ad9f3708c3bfb SHA-1: 9b1d7c4546ecf4160505c304979afed8ab75680c SHA-256: c0a53d71919038de263c7365c9d2ef0422ca1368b1dfb4dd77692e9316d93c05

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution campaign, likely initiated via spearphishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9978

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://philabc.ru/uplcv?utm_term=bhagavad+gita+in+kannada+pdf+free+download PDF link annotation
- http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8c1ed87ba4---dasaxelugogakidewe.pdfIn PDF document text
- https://iveducentar.com/uploads/assets/file/sowaduvarolekixezivodolo.pdfIn PDF document text
- https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16086bd1dc105f---25602487774.pdfIn PDF document text
- https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/0ad07e665dc32200a00d499d2cb354d9/71204451267.pdfIn PDF document text
- https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a9fea29835d---64613412732.pdfIn PDF document text
- http://airconbank.com/upload/fckeditor/file/61625121026.pdfIn PDF document text
- http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b329c496616---ragizutike.pdfIn PDF document text
- https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/aa31a142b66fcdd269b103eb8941fd7a/wimifudowodoj.pdfIn PDF document text
- https://webmenuplus.com/images/file/xofesarura.pdfIn PDF document text
- https://gertiesbloomers.com/kousumi/nulook/upload/fckimages/file/30535503480.pdfIn PDF document text
- http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/nt27j8tha8h6sjchf6ij25vgv5/6806710484.pdfIn PDF document text
- http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dffb1b22119---jagalutemajovibesizav.pdfIn PDF document text
- http://pizzeriagiganti.ro/imagini_ws/dukafu.pdfIn PDF document text
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160d6b50522b46---24919876708.pdfIn PDF document text
- http://erisalaw-chicago.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mavivekolobitidenorevum.pdfIn PDF document text
- http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c96adef312c---vunezukizatijavulebegotub.pdfIn PDF document text
- http://xn--or3bi2da319p.com/upload/fckeditor/file/xesogisodexebefiwese.pdfIn PDF document text
- http://bigyikesmedia.com/home/xtremweb/public_html/consultinstitute/web/upload/files/xajid.pdfIn PDF document text
- http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606cac3399321---92656271399.pdfIn PDF document text
- https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16110884962c3c---zidusewedekudumop.pdfIn PDF document text
- https://nothingbutsafetyglasses.com/userfiles/file/86251737554.pdfIn PDF document text
- https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16094b57c200b3---75397077066.pdfIn PDF document text
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/16103a1c788ef2---viselemiselum.pdfIn PDF document text
- http://nghiencuuykhoa.com/uploads/userfiles/file/2061905964.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_off0000e6d5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE6D5	10904 bytes
SHA-256: `91ffa7eb8e1bdc81843d2f565872b8ece162f1acc2cb3c83c6b15dbd12041006`
`font_01_sfnt_off0000ffe0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFE0	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000117f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x117F2	17176 bytes
SHA-256: `c34777857e6ae01257ad6fab34aa54f05a9c5b314b5f34ec00377ab147b35269`

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