PDF malware analysis — malicious · 714be0b1d5025d93

MALICIOUS

PDF

82.4 KB Created: 2021-09-07 01:32:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: f4d6b8dc9299a63d3b8e45706c5ba7f4 SHA-1: 65ea6b0bfd7524e0a843dfd1b4f22aefb1a295c3 SHA-256: 714be0b1d5025d93d7725abeb3d08e39c64117ca68f9a5910edbe3c88715d553

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected as a phishing trojan by ClamAV and flagged by an ML classifier. It contains numerous links, many pointing to compromised CMS upload directories, suggesting it's designed to lead users to malicious content or phishing pages. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, indicating it's not intended for direct user reading but rather as a container for malicious links.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

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://hitpoint.tw/userfiles/file/57544746386.pdf In PDF document text
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/ub5bknn5hvfr2l9o7rdqut56j1/rezegugomaxifanudabotis.pdfIn PDF document text
- https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d13fe5519f---wameradezetikosem.pdfIn PDF document text
- http://newtarrytowndeli.com/uploads/files/mejixiwalovuwazupubopibip.pdfIn PDF document text
- https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e1d43c3c781---85225942560.pdfIn PDF document text
- https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/8d2d2377e4ff1bffcd13acee5a639714/mewuxotu.pdfIn PDF document text
- https://francois-daulte.com/ckfinder/userfiles/files/39475217346.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/v22c4hjple52a4hi5a7eker1d1/wawofazitukum.pdfIn PDF document text
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fede27dda93---1728272869.pdfIn PDF document text
- https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eac214886b---45986577121.pdfIn PDF document text
- http://suncitygroup.ir/basefile/suncitygroupir/files/3103713721.pdfIn PDF document text
- http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1606cedd3d4edc---13416484710.pdfIn PDF document text
- https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160885cf9deea9---domilofodojuzisur.pdfIn PDF document text
- https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/751b60ff5c0e371ae9b998bb53b39616/wutovilawasukozuzas.pdfIn PDF document text
- https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b7410cd1e14---15468797751.pdfIn PDF document text
- http://www.pzkexie.com/up_files/file/jifubisonibowitatebu.pdfIn PDF document text
- https://network-italia.com/file/27318036425.pdfIn PDF document text
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c7b74c539ff---zubano.pdfIn PDF document text
- https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/acfa80d16af3aa9ec7b810f0a41b4f37/nawuxawutimeputaxibasilo.pdfIn PDF document text
- http://solee56.com/ckfinder/userfiles/files/3337243197.pdfIn PDF document text
- https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/fa55bea12e480bfb4483002ee7e09f69/32340608807.pdfIn PDF document text
- http://kulturazebrak.cz/userfiles/menadisowagi.pdfIn PDF document text
- http://tourister.kr/userfiles/file/vanaxeluxa.pdfIn PDF document text
- http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/6be2vp2luuj9abt8uioebu0tol/86629551181.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=harry+potter+novel+in+telugu+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_off0000dd76.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDD76	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f588.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF588	17532 bytes
SHA-256: `47a676f203b0756ad1b9d51e567834b00391506effae2ded14c3cf8b085cf925`
`font_02_sfnt_off000122f6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x122F6	10776 bytes
SHA-256: `cbb626e6d2102e1666014903b74543d1742a3f727bc33244c3069368338cced1`

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