PDF malware analysis — malicious · 8e84ec9c4587d6cf

MALICIOUS

PDF

90.7 KB Created: 2021-07-30 23:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05

MD5: eb29790e6fcc6b7c705d4f042c24f666 SHA-1: f88b4372c6fb755a479ed4c4f9633e9ac801bc47 SHA-256: 8e84ec9c4587d6cf3036a28d098c567307900fd0defd8d7e6998e9e25f3ee226

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it likely exploits a vulnerability or is used for phishing. The document functions as a link farm, containing numerous URLs that point to other PDF files hosted on compromised websites or disposable domains. This suggests a multi-stage attack where the initial PDF serves as a lure to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9932

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 http://hz-kontejnery.cz/ckfinder/userfiles/files/75918903867.pdf In PDF document text
- http://thicongdiennuocmiennam.com/uploads/files/fopugojinunegufopaxuk.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/mbims3i3e4v5ddloabusdotmil/7445968993.pdfIn PDF document text
- https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/7d5aa34a6926feeb9c6d902d3068a67f/41345670597.pdfIn PDF document text
- https://toolsatool.com/userfiles/files/6086193506.pdfIn PDF document text
- http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/m23ni70nd8alalnkek2f1tji25/kekubefeliresotep.pdfIn PDF document text
- http://uniroll.pl/user_images/file/wigudonaka.pdfIn PDF document text
- http://toanlinh.vn/upload/files/katotivazelaka.pdfIn PDF document text
- http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f36fe08120---8785147844.pdfIn PDF document text
- http://amexeuro.com/an3_Uploads/file/xibojazajatak.pdfIn PDF document text
- http://www.hussco-steel.com/husscofiles/files/rixofib.pdfIn PDF document text
- http://faxik.ru/ckfinder/userfiles/files/26411504599.pdfIn PDF document text
- http://josephlillianmorrisfamily.com/clients/59960/File/42867821548.pdfIn PDF document text
- http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607fec37c8e88---wugol.pdfIn PDF document text
- http://lapenya.cat/imgjovesnaves/file/rakobubode.pdfIn PDF document text
- http://rocincorporated.com/domain.com/images/dynamic_pages/file/80302869496.pdfIn PDF document text
- https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/ibb36iqio06v7nhruednuecsqm/82913749853.pdfIn PDF document text
- https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607504035cc76---50919943929.pdfIn PDF document text
- https://teenvolunteerhouston.org/wp-content/plugins/super-forms/uploads/php/files/c228c2268fcc170a82929474d9035887/16536126942.pdfIn PDF document text
- https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beef737d76b---54844488135.pdfIn PDF document text
- https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/0f1fdf66176b514a26c766256532fcea/sepep.pdfIn PDF document text
- https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/71030ac3ae668d0db86ebd5595f5ed31/pulejebobos.pdfIn PDF document text
- http://tuanayapim.com/rsm/files/9832505682.pdfIn PDF document text
- http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/df5lhvpb27ojibpmkjlj3cucv2/wurezebasarip.pdfIn PDF document text
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/or28qciduk5q5fv18id8020jh2/lifag.pdfIn PDF document text
- https://aduanaldelvalle.com/userfiles/file/sufateputesilixixo.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=abcd+movie+all+song+download+mp3PDF 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_off0000fd67.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD67	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0001157e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1157E	11104 bytes
SHA-256: `431e57b8036dd802f49504c52ef5cfecc5c938ae42155e553e7bccd0eb69521d`
`font_02_sfnt_off00012f0a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F0A	17248 bytes
SHA-256: `9c6a25055239e959b607fe36f8b5dcb89c61b915eed2862deed604be00f1d10e`

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