PDF malware analysis — malicious · afea286e6f7fa69a

MALICIOUS

PDF

81.4 KB Created: 2021-08-28 03:29:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 2c5459bc11cf7ee182ed84ba70300860 SHA-1: a030251424df944bb3fb012a3f6a2be5b2a35cd3 SHA-256: afea286e6f7fa69a93199b31612f56359f253c3dd80554ee44a2415ab85c89f7

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous links to compromised WordPress upload storage and other disposable hosting, indicating a link farm designed to redirect users. The presence of external URIs and compromised CMS upload links suggests an attempt to host malicious content or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 0.9937

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://lidiyageorgieva.com/ckfinder/userfiles/files/tujoxudijibaxevulod.pdf In PDF document text
- http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f99742368a---93042172753.pdfIn PDF document text
- https://preciseenergygroup.com/media/77357462251.pdfIn PDF document text
- https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/f1d5647f77788f337bc0fd715e91e54e/beririxelusozux.pdfIn PDF document text
- http://blissworldbeauty.com/newerac2c/userfiles/file/3580931868.pdfIn PDF document text
- http://risorsaterra.it/userfiles/files/dijel.pdfIn PDF document text
- http://macap.nl/app/webroot/files/userfiles/files/57309320650.pdfIn PDF document text
- https://svetplus.com/userfiles/files/lolidukipuwowitubeguzuvo.pdfIn PDF document text
- https://distriparkbotlek.nl/userfiles/files/kuporufaxafujodawunal.pdfIn PDF document text
- http://sciattella.net/images/file/39289116282.pdfIn PDF document text
- https://gamma-electronics-eg.com/userfiles/files/tidupov.pdfIn PDF document text
- https://pharmnet.cz/ckfiles/files/files/3266399032.pdfIn PDF document text
- http://cephedanismani.com/images/pages/file/95857943835.pdfIn PDF document text
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f87ea3b275---92326916225.pdfIn PDF document text
- https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160862bfe32efb---17777126016.pdfIn PDF document text
- https://kaowei.tw/image/files/20210805_051135.pdfIn PDF document text
- https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160807409b927d---sijamoxamojalen.pdfIn PDF document text
- http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160755341449f6---25183351729.pdfIn PDF document text
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/47d9fa57f2f6803364da7112f299e7fc/10813792308.pdfIn PDF document text
- https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fcd1734a205---19884541021.pdfIn PDF document text
- https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/9f613b21fafedd3d3192241a055f10f8/96296594918.pdfIn PDF document text
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611bd1932a608---82812341989.pdfIn PDF document text
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb32390b8b---jimel.pdfIn PDF document text
- https://master.plus/wp-content/plugins/super-forms/uploads/php/files/811a7c2565ca5f24a7cef052caf7b96e/33917242834.pdfIn PDF document text
- http://henanshuangxin.com/d/files/kugates.pdfIn PDF document text
- http://apvn.info/userfiles/file/jujemesimitorememi.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=4+the+cause+everytime+you+go+awayPDF 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_off0000d1a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD1A9	10876 bytes
SHA-256: `8be2cb49f29d4fcbe1110aa02fbb98921effb70c4d8c27aa2173726dcbe6806e`
`font_01_sfnt_off0000eafc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEAFC	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0001030e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1030E	20228 bytes
SHA-256: `72526abd853231f76c9473bd7a67201bef2bcd5512682f123f1f07fd620a0606`

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