PDF malware analysis — malicious · f43dc35c291f0613

MALICIOUS

PDF

89.7 KB Created: 2021-09-06 19:25:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04

MD5: a57a6743767b313e10486e7b867a49f7 SHA-1: fdf97e541a28007ea9d4be7981c5fbb078a8e61a SHA-256: f43dc35c291f061367514cde7bf2f5ab573a6f4716da43fffe9872310d9553f2

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9913

Heuristics 7

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://orgue-chantepie.info/FCKeditor/upload/file/56792706049.pdf In PDF document text
- https://handinhand-daycare.com/ckfinder/userfiles/files/xojat.pdfIn PDF document text
- http://allprintusa.com/admin/images/file/jewurop.pdfIn PDF document text
- http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/g8c3pipqhccjcoq7ntjft8u5v6/rugogutuw.pdfIn PDF document text
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16080ed665c75a---bagerakumikemufe.pdfIn PDF document text
- https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160928a8938c65---16071322729.pdfIn PDF document text
- http://veterinariacomportamentale.it/userfiles/files/3735457537.pdfIn PDF document text
- http://amindoost.ir/images/upload/files/regufowinexun.pdfIn PDF document text
- https://www.khaosanpools.org/ckfinder/userfiles/files/verafilajojigirivamegala.pdfIn PDF document text
- https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8494262ad912a69d513b9a94c0a7e536/xizekojomujizusen.pdfIn PDF document text
- https://shuswapladystriders.ca/userfiles/file/tonizupewejow.pdfIn PDF document text
- https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/2e107fe41c7fba1ece2d079f134175da/sezataxit.pdfIn PDF document text
- https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/ca36682999fb553be13ed00ec2f09bbd/bojesuwesejikekugijup.pdfIn PDF document text
- http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1608570330aa9d---kujemutojixo.pdfIn PDF document text
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f797773e94c---liponomudularewobim.pdfIn PDF document text
- http://veterinariacomportamentale.it/userfiles/files/wofidibo.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f9f0e2ce1f1---33004206889.pdfIn PDF document text
- https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/6bf7f28b2f34e33f0ae71ac5b76b6a9b/lavepo.pdfIn PDF document text
- https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/382fef88846a41c9dba43ccf79db1463/lavibufuvojuwozesitajev.pdfIn PDF document text
- http://svsteinfurth.de/radsportfiles/file/6928599936.pdfIn PDF document text
- http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/9a6491cefb0cc4f14a0da0b647b93614/97298987927.pdfIn PDF document text
- http://dsagco.com/Upload/file/povakebajazevininek.pdfIn PDF document text
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/1b1a1c42389148ff41c1151c6cc84a7e/93884733423.pdfIn PDF document text
- http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bdbcf11405a---9954111834.pdfIn PDF document text
- http://aytekinpolatel.com/image/files/kokolutep.pdfIn PDF document text
- http://esenkardeslerinsaat.com/resimlerfiles/82986157691.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=converter+arquivo+adobe+reader+para+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_off0000f90c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF90C	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0001111e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1111E	18408 bytes
SHA-256: `28851e3b365269d71b8e0734f81097ffd3eb7bda06e5a284709a4be53f2db69c`
`font_02_sfnt_off0001405f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1405F	10760 bytes
SHA-256: `7e99165f9449c4405c0718d8c2d82110c84d3fb697dc839ec67487dbc54ab8d7`

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