PDF malware analysis — malicious · 38d20bb92a4d48e7

MALICIOUS

PDF

78.0 KB Created: 2021-08-24 07:44:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25

MD5: 42c00beac50ce7ec11131f00df74a453 SHA-1: e0e88233a06f4001a20b3129685ea2065f783158 SHA-256: 38d20bb92a4d48e772561b7f329e7c49c13f516c8d376007ca6dfb6c18d16dc6

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress upload directories and other disposable hosting, suggesting a link farm designed to manipulate search engine results or distribute further malicious content. The presence of multiple distinct hosts and the use of UTM parameters indicate a coordinated effort for SEO spam or phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9943

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://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/7f3f95d87b7ac145d0f2954b4ee98e50/fakojuzeta.pdf In PDF document text
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094a9af69e78---detizupewava.pdfIn PDF document text
- https://nguyenhungstone.com/uploads/image/files/nirapo.pdfIn PDF document text
- https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/5993752e019c519a178d085869a05885/81558668958.pdfIn PDF document text
- https://affordans.com/ckfinder/userfiles/files/kidenelavasuluvimususono.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/5e779641ef6a3fbf51c8f4e421bf4d0b/39050106071.pdfIn PDF document text
- https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/9np13fjtq02gm7asnalu2ggn07/24514337575.pdfIn PDF document text
- https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/083bbcc04db5cbf2619c06de6ea36fb0/70275165036.pdfIn PDF document text
- http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/602828944035db6465a22ee730f55fe4/pupipexikonanivete.pdfIn PDF document text
- https://aydin-elektrik.com/resimler/files/54943564836.pdfIn PDF document text
- https://shiokerbau1.com/contents//files/94514935923.pdfIn PDF document text
- https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1609f32f6cf6e3---jozazijamidumekisarododu.pdfIn PDF document text
- http://bularz-auto.pl/images/userfiles/file/4732284650.pdfIn PDF document text
- http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16071df4881cae---17322617196.pdfIn PDF document text
- http://iphonedown.com/ckfinder/userfiles/files/raxanunilamufozukofuta.pdfIn PDF document text
- http://tysons-cafe.com/uploads/files/maponirobawugilibux.pdfIn PDF document text
- http://youandisagenix.com/ckfinder/userfiles/files/saletunanodibinadijabaj.pdfIn PDF document text
- http://enovosti.info/ckfinder/userfiles/files/soxudiwidiwa.pdfIn PDF document text
- https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609061f14553b---demujodomejupowerures.pdfIn PDF document text
- http://macautemple.com/userfiles/file/bajodava.pdfIn PDF document text
- http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1d5a9c8523---29420745235.pdfIn PDF document text
- http://aromacosmetics.bg/assets/userfiles/file/94411516875.pdfIn PDF document text
- https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dd8a64445cb---gexabogogejudon.pdfIn PDF document text
- https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608729c633cda---muxiwurolemaran.pdfIn PDF document text
- https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/82be9a7834a96dac56e1c55c1e4d4cf3/geresewobe.pdfIn PDF document text
- http://jongauger.com/ckfinder/userfiles/files/saranonipiwugukolezi.pdfIn PDF document text
- http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160e4fd76b8045---fulujimuvaron.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=brown+dachshund+for+salePDF 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_off0000cc16.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC16	16756 bytes
SHA-256: `2c4abe5c2707a6360891e4d571748785cc2a16e5da9b5e15a903a1dcd298e5e0`
`font_01_sfnt_off0000f7db.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF7DB	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00010ff2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10FF2	10624 bytes
SHA-256: `3e16a0d2048796abc12ee79ee07b51861b32186b397cbdf3fb59d30bfb4332e1`

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