PDF malware analysis — malicious · 8e2404ebf62930a5

MALICIOUS

PDF

82.8 KB Created: 2021-09-07 17:12:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: b6611e03b03ad3250cb6cd236800d335 SHA-1: 588ada3afa7162844ee805f4aa934c62ad7a2b7c SHA-256: 8e2404ebf62930a5e9dfeede7e85bacd75e5e5dba70588d85e27bb28171fbcdc

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised websites, many of which are designed as link farms. These links likely serve as a lure to download further malicious content, as indicated by the ClamAV detection and ML classifier flagging it as a phishing trojan. The presence of embedded URLs and the structure of the PDF suggest an attempt to exploit users through deceptive links.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://pistant.ru/uplcv?utm_term=cuisinart+prepexpress+manual+food+processor PDF link annotation
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b760f0ecac7---14124504852.pdfIn PDF document text
- http://herningbadintra.dk/app/webroot/upload/files/noxuvukos.pdfIn PDF document text
- http://yilip.net/userData/board/file/54342661909.pdfIn PDF document text
- http://ekolojikweb.net/upld/userfiles/file/2861397777.pdfIn PDF document text
- https://gifarlcm.com/upfiles/editor/files/galetipirilofowog.pdfIn PDF document text
- https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb5439d334---37119090771.pdfIn PDF document text
- https://liur-krd.ru/userfiles/file/56465801574.pdfIn PDF document text
- http://madison62alumni.com/clients/e/e8/e84cd6a5166dbe8c5f6852bff763f4b2/File/sepasuxumafif.pdfIn PDF document text
- http://bjallstar.com/upload/file/97505210487.pdfIn PDF document text
- http://archissimo.eu/userfiles/files/94761556278.pdfIn PDF document text
- http://wjcopy.com/upload/files/bekure.pdfIn PDF document text
- http://szrealty.net/uploadpic/2021-5/file/2021050816090873499.pdfIn PDF document text
- https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608827c88868c---33809302099.pdfIn PDF document text
- http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16103bbed3a41a---71641066159.pdfIn PDF document text
- http://chemonova.com/FCKeditor/file/raduvozefofuxi.pdfIn PDF document text
- http://pincailight.com/zk/UploadFile/file/2021071810380173499.pdfIn PDF document text
- https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/3bd407e0d6967aafd5411cd7c323db04/76565690247.pdfIn PDF document text
- http://woorymart.com/userData/board/file/24311203045.pdfIn PDF document text
- http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/g7d54jtkmuok83ove7l6kvk563/peraliperonaso.pdfIn PDF document text
- https://brazilairporttransfers.com/ckfinder/userfiles/files/minep.pdfIn PDF document text
- http://congtyvima.com/images/Download/sunafupikidekumegonoxiruw.pdfIn PDF document text
- http://celesteandtorsten.wedding/images/file/pipagowuritumosasafexude.pdfIn PDF document text
- http://gldbirdgel.com/user_img/files/21219024778.pdfIn PDF document text
- http://orderkiwicafe.com/uploads/files/72214841636.pdfIn PDF document text
- https://mediaget.com/userfiles/files/46092091219.pdfIn PDF document text
- 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_off0000debd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDEBD	11012 bytes
SHA-256: `494fb365972c21f83c60a98422ca1f28221fff462488f4f6e6d71033622d686a`
`font_01_sfnt_off0000f862.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF862	17244 bytes
SHA-256: `9d98bf4b71e19be9ef2fc7feb1192538fa4eb1c6dd00448a3687b5853c355371`
`font_02_sfnt_off000124c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x124C6	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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