PDF malware analysis — malicious · 0660a00805eca8bd

MALICIOUS

PDF

95.5 KB Created: 2021-09-01 01:27:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05

MD5: aff7b6f9ef46ecc68a7ffff2defcc5ef SHA-1: d8fa7e7f2fca6c65ab18385b67ac83eb29c58e69 SHA-256: 0660a00805eca8bdd3787ee7fe4d7541f143aa5fd4a50d39619bb3b12667af0a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress upload directories and disposable hosting sites. These links likely serve as a distribution point for further malicious content or phishing attempts.

Machine Learning

Nyx PDF Classifier malicious score 0.9897

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://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/cebf851ff3c575718307faf261c2ed64/debuken.pdf In PDF document text
- http://dlshixiang.com.cn/ckfinder/userfiles/files/joditurenubituti.pdfIn PDF document text
- http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607236f46f7ac---22657376431.pdfIn PDF document text
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/d091a9797c8e8f0ad4c547aa2ac9e690/96780160420.pdfIn PDF document text
- https://feldmann.pl/userfiles/file/65572781259.pdfIn PDF document text
- http://hide-bo.com/img/tmp/file/xowezeralibelim.pdfIn PDF document text
- https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/4241e806d13ed172596e6e658e827391/4925441370.pdfIn PDF document text
- http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/nqs9e9kv0th9rnnqpohrh12ori/40967452105.pdfIn PDF document text
- https://ipic.vn/userfiles/file/wafedekijinerazoxidas.pdfIn PDF document text
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1607d7c46b1776---70243597428.pdfIn PDF document text
- https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/cebb2d83c9afa840d1708731e9c0de78/63099362820.pdfIn PDF document text
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609eaad1c2cc2---zovegajosomijalifixad.pdfIn PDF document text
- http://dennehylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/19836815892.pdfIn PDF document text
- https://sheenabusesandcoaches.com/userfiles/file/tedogebepeneguriruloxabe.pdfIn PDF document text
- https://sharadsangam.org/UserFilesTwo/file/91013704225.pdfIn PDF document text
- https://arerp.kr/data/file///9003182682.pdfIn PDF document text
- http://turskazka.ru/ckfinder/userfiles/files/dozolagi.pdfIn PDF document text
- https://mysilo.com/upload/ckfinder/files/wowesofizuruwodowanotak.pdfIn PDF document text
- https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/a88d32129e5b984c470f1c702f04d3c2/volawo.pdfIn PDF document text
- https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/19ecc1a62571e417e923ba2c83e4ae01/68624591076.pdfIn PDF document text
- https://wsbtitan.com/images/file/38852975605.pdfIn PDF document text
- https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/9eb20b5a5ada13ab033f8869db4df678/26659334714.pdfIn PDF document text
- http://solarissoft.com/img/userfiles/files/sejazekilopesowajo.pdfIn PDF document text
- http://cdmatik.com/uploads/file/xopofuzemukuxorupibusus.pdfIn PDF document text
- http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609917f4cc13d---17738175695.pdfIn PDF document text
- https://atpl.aero/ckfinder/userfiles/files/4624651715.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/dcq9igpun76m6ev306tjimp4i1/somaguxurupubegupovitero.pdfIn PDF document text
- http://74ahs.com/clients/2/2a/2a132ee8da0778863662fd4b1fa251ed/File/28428384786.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=how+to+apply+shadow+in+photoshopPDF 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_off00010f6a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F6A	18956 bytes
SHA-256: `29b0c289d3ae8a2d6220802342217c3fe11af8cbe6e3e99beebb5e9e70069d1f`
`font_01_sfnt_off0001402b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1402B	10448 bytes
SHA-256: `615c2b23c7bc9c3330b4f69ae5686a7d59d89d67ec4d201b2b7e4a340caf399e`
`font_02_sfnt_off000157d5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x157D5	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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