PDF malware analysis — malicious · d220280ac3ca45b1

MALICIOUS

PDF

86.6 KB Created: 2021-09-01 11:56:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: a80fcdfd508950a88fa4e1561f137cba SHA-1: a2eab75ecd1aa3148b518ec0b4429a977b42c86a SHA-256: d220280ac3ca45b1b9bc966511579df18de2f8dda94431fa8251e55e56214f9b

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as a malicious PDF by ClamAV and an ML classifier. It contains numerous links pointing to compromised websites and disposable hosting, indicating a phishing or malware distribution scheme. The PDF structure and embedded links suggest it is designed to redirect users to malicious content, likely exploiting a client-side vulnerability.

Machine Learning

Nyx PDF Classifier malicious score 0.9982

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://dentalrud.com/userfiles/file/mefufizanisixuwifumexije.pdf In PDF document text
- https://avukatwebsitesi.trakyasoft.com/upload/files/mefipunazow.pdfIn PDF document text
- https://brazilairporttransfers.com/ckfinder/userfiles/files/dewivuwodewizosaz.pdfIn PDF document text
- https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/dhb0s1dnnag20qsm1crj17l4do/lotiputujetefedipi.pdfIn PDF document text
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0e7633c21a---timawiw.pdfIn PDF document text
- https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca657a7152---13585398749.pdfIn PDF document text
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075fa881b5ae---45864234296.pdfIn PDF document text
- http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c881ad15ff---12631812583.pdfIn PDF document text
- https://alamansyria.com/userfiles/file/54605750951.pdfIn PDF document text
- http://clairerolo.com/userfiles/file/98873652730.pdfIn PDF document text
- http://glassco.ca/clients/9/99/99aa1728c1dafa3cf8773a75727b87c9/File/9145029561.pdfIn PDF document text
- https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/9af135dd97cef81cc56a2a13c6017d8c/bamapelivadoporowefav.pdfIn PDF document text
- https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c240c6b22be---3357422942.pdfIn PDF document text
- https://bodzlomu.com/userfiles/file/67190820120.pdfIn PDF document text
- http://old.bgk-meshkova.com/ckeditor/ckfinder/userfiles/files/biwivexenif.pdfIn PDF document text
- https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/aef712e7d11099cca307ad88434b0d50/40165978810.pdfIn PDF document text
- http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/160dba2d7afc57---biruxikoxitufu.pdfIn PDF document text
- http://dulichgiahy.com/upload/file/61556182785.pdfIn PDF document text
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beabf228614---pufajo.pdfIn PDF document text
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098041a9b5ea---40352830961.pdfIn PDF document text
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/9d0cd80570e5fcd9209d6c3db1d27952/sodazaxaluwiril.pdfIn PDF document text
- http://dishandspoonproductions.com/ckfinder/userfiles/files/dozosurumubiwogeludasigo.pdfIn PDF document text
- http://mn-print.ru/ckfinder/userfiles/files/73546557322.pdfIn PDF document text
- https://angkoronetour.com/userfiles/file/67186190879.pdfIn PDF document text
- https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/a81aaa3f9f37e08c1c6fb67a419bfb38/39336197226.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=how+do+you+save+an+html+file+as+a+pdfPDF 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_off0000eb97.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB97	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000103a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x103A9	18228 bytes
SHA-256: `c7403c94782e42ca3b7cbf5da8d52dea35611d638f9fc1a88a8d130dae590ae7`
`font_02_sfnt_off0001324d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1324D	11020 bytes
SHA-256: `4a43f43fe7e16b8ac48d60b923faf6d2341186c2d6cc9ce76468fb4ea46169dd`

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