PDF malware analysis — malicious · 77f0a60e60d28b3d

MALICIOUS

PDF

75.1 KB Created: 2021-08-20 07:31:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 8c0ccb733b03c5de9614b0ce8a772c07 SHA-1: f7537d5f973ed824a563dbaf15fd03caa5fec087 SHA-256: 77f0a60e60d28b3d1e0d2975dbd0ae1bef07170dee629e0ffdd9f3da7f38b23c

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting it functions as a link farm. The URLs are likely intended to lure users to phishing sites or download further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9985

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=macroeconomics+theories+and+policies+froyen+pdf+free+download PDF link annotation
- http://kochamsushi.pl/UserFiles/file/37808910886.pdfIn PDF document text
- http://bjaimama.com/data/upload/2021/07/file/202107170858118660.pdfIn PDF document text
- https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/444547fe4e7f8186012a5f1239cb1ffd/lusewigimafukewu.pdfIn PDF document text
- http://scheiden-maassluis.nl/uploads//file/vudedewijigomivu.pdfIn PDF document text
- http://ridendo.cz/files/file/wikexapi.pdfIn PDF document text
- https://avphunter.ro/ckfinder/userfiles/files/22920129208.pdfIn PDF document text
- http://staropolski.net/Upload/file/4946209667.pdfIn PDF document text
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/f3c305309ad73224b4ff7be11b2d69a0/libiz.pdfIn PDF document text
- http://sonnenheizungen.ch/fckeditor/editor/images/file/24676625445.pdfIn PDF document text
- http://xpressup.com/userfiles/file/rizibevotukajuruw.pdfIn PDF document text
- http://stfrancisfrankford.com/clients/9/90/9051900d87e3fdd5bc97eff612ac54c4/File/kigenudubagozerar.pdfIn PDF document text
- https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/ab11a3838bfbd8e66a9b0beb4d3830bd/navikusiwoseruwireseronib.pdfIn PDF document text
- https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/e97bd52ab6d687036679a333ffa56c45/damozosiwurolega.pdfIn PDF document text
- https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/a9840864865b54b6cb93fd7d860b0f20/9438015524.pdfIn PDF document text
- https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/39aa93b7296c7e0f24269d68bbef339c/92185521467.pdfIn PDF document text
- https://cbconsulting112.ca/userfiles/files/pikiworibefesu.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160af860bcc2b5---rawodinivaxedidomisun.pdfIn PDF document text
- http://ferramentabelleggia.it/public/file/dabuxufoduwumewijaliz.pdfIn PDF document text
- https://estoniapools.com/contents/files/dasobilopegediku.pdfIn PDF document text
- http://cnc-soustruzeni.cz/files/file/52351638007.pdfIn PDF document text
- https://heuresromantiques.com/upload/files/gizatunelodina.pdfIn PDF document text
- http://gadkowski.pl/repository/filemanager/file/27484039114.pdfIn PDF document text
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/f04789d23c6b57415c6619524bd49e57/xizixuv.pdfIn PDF document text
- http://arcos-eff.it/userfiles/files/fenidowuxuzupagetifawote.pdfIn PDF document text
- https://apc-algercentre.dz/ckfinder/userfiles/files/23080806013.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_off0000c247.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC247	16400 bytes
SHA-256: `8369e5c126132760fff1cd6ea6d4ddbf743e5a91e52a948033fcf2b415d1153c`
`font_01_sfnt_off0000eb74.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB74	11080 bytes
SHA-256: `0e2c87668f3b4ac59bc7884d29b3f52a11ec022a5f983ebc14ee55e2cdc092b1`
`font_02_sfnt_off00010526.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10526	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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