PDF malware analysis — malicious · 525d84b17eaa0ede

MALICIOUS

PDF

86.4 KB Created: 2021-08-07 01:32:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13

MD5: 0dc4dd85ac72078b98f7939998632d9a SHA-1: be2c424c9c80e106f22da3776381156f6302affc SHA-256: 525d84b17eaa0ede7f9e912b6f24b80188bdbb3c4a8384af7d7e9d7ae87936f5

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised CMS upload directories, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. The file's structure and link farm behavior are consistent with a phishing or malware distribution campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9987

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://tysons-cafe.com/uploads/files/48303784798.pdf In PDF document text
- https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081196ca0511---20388677507.pdfIn PDF document text
- http://akkoryazilim.com/userfiles/file/9609763235.pdfIn PDF document text
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/64be6db47c7b3186814b1cff682fddab/mikinajemozakatajafatebaz.pdfIn PDF document text
- https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/525ced270330dad2e019042aee9d91e0/xojelomu.pdfIn PDF document text
- https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/eccf11400bd1e88e1112210cc140809f/96658709431.pdfIn PDF document text
- https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/c52c247325069e865611954ccec91533/toxatajulajixefod.pdfIn PDF document text
- http://blevy.com/ckfinder/userfiles/files/72349632086.pdfIn PDF document text
- http://petraifevronii.ru/ckfinder/userfiles/files/31823232341.pdfIn PDF document text
- https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/b7f88b6d8860bbe12733fbc772044d3f/8683911128.pdfIn PDF document text
- https://minhgianggroup.vn/upload/files/69967538240.pdfIn PDF document text
- http://progettarecasa.com/userfiles/files/pebapemakapubuzeranove.pdfIn PDF document text
- http://fine-cottage.ru/userfiles/files/6010806378.pdfIn PDF document text
- https://f27szerviz.hu/upload/files/32289017382.pdfIn PDF document text
- http://bitite.lv/media/txt/122/file/rininejo.pdfIn PDF document text
- http://nebovsem.ru/app/webroot/files/files/98664228615.pdfIn PDF document text
- https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/tqakhnfl567k8bvn8gf2iukaag/72728610972.pdfIn PDF document text
- http://phutungototuanphat.com/img-tvdl/files/90896707079.pdfIn PDF document text
- http://koovappadyscb.com/ckfinder/userfiles/files/lorujoxab.pdfIn PDF document text
- http://studiotecnicobergamaschi.it/userfiles/files/80070671432.pdfIn PDF document text
- https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b53b854a1---vidifiwol.pdfIn PDF document text
- https://www.hemoroidklinigi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608327a62db35---fovepanonana.pdfIn PDF document text
- https://abandassociates.com/ckfinder/userfiles/files/98711818608.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=somewhere+over+the+rainbow+sheet+music+free+downloadPDF 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_off0000e95b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE95B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010172.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10172	11208 bytes
SHA-256: `ee7ebabe3f7544457aaf85b4d4a806d60d92269a1a3ebc9c438d730013cc37bc`
`font_02_sfnt_off00011b7f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11B7F	17872 bytes
SHA-256: `72b21f1d17499ee2a255dfe3b25435af718729d76eca39b3392a2585f29004a3`

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