PDF malware analysis — malicious · 083b63e653a08de9

MALICIOUS

PDF

73.0 KB Created: 2021-09-02 16:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 60f4a75f58fa15a763e67a215e91261b SHA-1: d7e61c62dd3ff49313bf82fc9c7847f0a03a46b5 SHA-256: 083b63e653a08de9832e99709cad9d5e46baa2a78e7adc035f029f5ac1f60bf3

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of links, many pointing to compromised WordPress sites, suggesting it's designed to redirect users to malicious content. The embedded URL `https://drafthe.ru/uplcv?utm_term=simple+household+budget+worksheets` is likely part of this redirection chain.

Machine Learning

Nyx PDF Classifier malicious score 0.9973

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://drafthe.ru/uplcv?utm_term=simple+household+budget+worksheets PDF link annotation
- https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/e81320446528bad460b05e3caf422513/19038610248.pdfIn PDF document text
- https://onlinendttraining.com/files/40895430837.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c00efd6b7cf---26014043454.pdfIn PDF document text
- https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/4ca716060cd4df332ea8c89fe0874690/tuwewiselosaforipurabula.pdfIn PDF document text
- https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/bumulf89k9p9o3i8d340mfid77/dijodug.pdfIn PDF document text
- https://fertilizerproductionprocess.com/d/files/xaroka.pdfIn PDF document text
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/adfee3f5fd49d344ae5c56641cdae27f/lakitifurazafigil.pdfIn PDF document text
- https://gallerylingard.com/uploads/file/70629684020.pdfIn PDF document text
- http://samnakthodrahassob.com/userfiles/file/tozam.pdfIn PDF document text
- http://phayaotechno.com/UserFiles/File/naxifagezorotirewufupa.pdfIn PDF document text
- http://hilimall.ae/uploads/files/57505219481.pdfIn PDF document text
- https://bahispesinde.com/gnc/veri/_files/6589888014.pdfIn PDF document text
- https://novahealthclinic.ca/userfiles/file/wogujomaxog.pdfIn PDF document text
- http://buren-kompanie.de/userfiles/files/topemijujow.pdfIn PDF document text
- http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/d901181fcaccefb87c6155dfc113e9a3/76927873054.pdfIn PDF document text
- https://legacydockandmarine.com/wp-content/plugins/super-forms/uploads/php/files/bd3a59da455cd900f289c5673ed05fd1/81254702685.pdfIn PDF document text
- http://jngf.cn/files/file/kufus.pdfIn PDF document text
- http://hotelclinton.it/userfiles/files/70889159490.pdfIn PDF document text
- http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ecb6ed476---rodujulotisogemefan.pdfIn PDF document text
- https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/5274d4fec488ca0bbfd80713e8b77ad5/kazopivinuzigaluvexerukin.pdfIn PDF document text
- http://africanhairbraidingsalon.com/userfiles/file/zuminug.pdfIn PDF document text
- https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/f4u0dbn4ojp6ddnaqfb9nnro73/13079898694.pdfIn PDF document text
- http://baldonimarcostudio.eu/userfiles/files/3398259450.pdfIn PDF document text
- https://tsydesign.com/userfiles/jws/files/65679612745.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_off0000bc74.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBC74	15888 bytes
SHA-256: `8aa4e10c725fbbd1608add5ce528323eb51cbee1b798e7ce98aae31ca880b985`
`font_01_sfnt_off0000e4cf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE4CF	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000fce6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFCE6	11064 bytes
SHA-256: `920f1b6e81264a7b63d3dfeb0cc05a1920febc5facbac75ea8f68eeed12544d3`

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