PDF malware analysis — malicious · 1bfca9d74a00f423

MALICIOUS

PDF

77.3 KB Created: 2021-09-07 06:37:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05

MD5: e46d605ca9c1fc35d0b6ccdfb391511d SHA-1: 85c23fcd7d1de1678f718e07a1d138dbc08db315 SHA-256: 1bfca9d74a00f42302a021f4b8e9992b9bbc401a6defd538b932f00c3441bbad

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall detection indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9943

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://coretry.ru/uplcv?utm_term=como+funciona+la+energia+hidraulica+pdf PDF link annotation
- https://jiu-hang.com/upfiles/editor/files/21291838168.pdfIn PDF document text
- http://cy2hand.com/userfiles/4842253764.pdfIn PDF document text
- https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae2cf80bce4---68174895972.pdfIn PDF document text
- https://lukili.ch/UserFiles/files/64643280233.pdfIn PDF document text
- http://techbico.vn/uploads/image/files/labubusejuvewopasififo.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c457a8ebe8---44891651865.pdfIn PDF document text
- https://tramhuonghanoi.vn/upload/files/japoxogogasalejin.pdfIn PDF document text
- https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fa113182b7a---4516825673.pdfIn PDF document text
- https://ludifrance.fr/userfiles/file/bimafasejibovivifap.pdfIn PDF document text
- http://elturo.ru/img/upload/files/69957009714.pdfIn PDF document text
- http://artstudiodesign.it/userfiles/files/birurajeja.pdfIn PDF document text
- https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612b5dddb6909---zopasisikolidowujixi.pdfIn PDF document text
- https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/f436e4d55221506fb1520880e60daa65/68476252771.pdfIn PDF document text
- http://upperdublin1970.com/clients/3/3b/3b2fb281f4756d03d37a29c41a8c1d95/File/lasebolikomuvugijaj.pdfIn PDF document text
- https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/k5rfm6ma028f74tncj2ifcrdkp/xibabu.pdfIn PDF document text
- https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a04f61ec9e0---33002246216.pdfIn PDF document text
- https://tselectromechanical.com/uploads/CKfiles/files/1524603333.pdfIn PDF document text
- http://sakurahoaanhdao.com/webroot/img/files/newixusukubotokofe.pdfIn PDF document text
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccad1e8373---melonorulag.pdfIn PDF document text
- https://medius.sk/userfiles/file/xosikexal.pdfIn PDF document text
- http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160927b79407dd---soguxupoliwakunuvafobasi.pdfIn PDF document text
- http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16106978bcba4d---53812977008.pdfIn PDF document text
- http://famillespourstarlight.com/clients/a/a9/a9b42c05011d3bb27e7f7ec2ed30324f/File/49965749594.pdfIn PDF document text
- http://inwama4.vn/webroot/img/files/baxabeminibudivenijijoke.pdfIn PDF document text
- http://studiopol.it/userfiles/files/64878873569.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_off0000c8c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC8C6	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000e0dd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0DD	10932 bytes
SHA-256: `416dd6c750b955c1a2f4b8edce254bbddcba0ac2837fa945923aa8a2f91014ae`
`font_02_sfnt_off0000f9b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9B8	18268 bytes
SHA-256: `c7b8f1ef46c2b54ce2187bf51275ac29cd537c6b1cb2e1d68ceefbc423f7cb34`

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