PDF malware analysis — malicious · 4d2d0d0cb2d84723

MALICIOUS

PDF

75.5 KB Created: 2021-09-01 13:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: fd876e928aa050f9f1651e62898410a5 SHA-1: 993a9cac98131d2a8b4c02539280dfa2633ea990 SHA-256: 4d2d0d0cb2d8472373ac9e86769b029d482232fa3a2494b6702d97d94eaa9b87

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 ML classifiers and ClamAV, indicating it is likely a phishing or malware distribution lure. The document functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting domains. These links are designed to redirect users to potentially malicious content, aligning with a phishing or malware delivery attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9948

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://mamnonlittlesun.com/upload/files/pukunusogezebexereju.pdf In PDF document text
- http://pcccphucvinh.com/upload/files/jumubelowadek.pdfIn PDF document text
- http://3e3i.com/UserFiles/file///94854032935.pdfIn PDF document text
- http://www.ks-klinika.ru/ckfinder/userfiles/files/8067973134.pdfIn PDF document text
- https://espritgt.com/userfiles/file/kopesapiwumoj.pdfIn PDF document text
- http://mikailang.net/userfiles/file/20210718041957_622316667.pdfIn PDF document text
- https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/6b5ea18c5001be9c558a00eb248750cd/dirojimufuvogibi.pdfIn PDF document text
- http://m4krichmond.org/clients/3/3b/3bf4c986be49c21931b3574e72fd8103/File/35564762616.pdfIn PDF document text
- https://pointvirgule.ca/upload/editor/file/lepuxasimetuwikusikawup.pdfIn PDF document text
- http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/1381aa7c81bbf4ebd44ecf9449ee98b0/4096663703.pdfIn PDF document text
- https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8a6e9e761---57157502352.pdfIn PDF document text
- http://studioego.cz/userfiles/file/81512094201.pdfIn PDF document text
- http://wilkinsconnection.com/clients/9/94/94ba1e7d864c5c8af3bb481f5f9f31de/File/godivukepetava.pdfIn PDF document text
- http://uniquecharacters.com/upload/files/fepidexalesonaxutelad.pdfIn PDF document text
- http://polimak.pl/userfiles/file/rogibujivekupejabo.pdfIn PDF document text
- http://xn----gtbercbfedtm3b.xn--p1ai/admin/ckfinder/userfiles/files/52289855283.pdfIn PDF document text
- https://thuhuonglacquer.com/uploads/news_file/vafexadiviromomudujelo.pdfIn PDF document text
- https://www.elshandmadedesign.nl/ckfinder/userfiles/files/kubupinon.pdfIn PDF document text
- http://fxmeat.com/upload/file/a54217f19f023e2a89704aa016918fff.pdfIn PDF document text
- http://elite-nails.pl/Upload/file/64916396028.pdfIn PDF document text
- https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/56714cd88d5563235f8bfdb22506bc8f/xijageraxu.pdfIn PDF document text
- http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a1c67a42dcf---5065955883.pdfIn PDF document text
- https://cmetrix.net/ckfinder/userfiles/files/84757446570.pdfIn PDF document text
- http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608b499e7b84a---muselulidutezupikeviwim.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=over+the+tipPDF 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_off0000c5a1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC5A1	17712 bytes
SHA-256: `cbadc477ca6968a207f6a73c04aa2c64cbd0cf97e0cb59de8fed3341c4d8cedb`
`font_01_sfnt_off0000f32d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF32D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00010b43.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B43	9840 bytes
SHA-256: `1088b5395f8ab4af509a2701e7d692e4a48502c75e59f3a41c26e144dcc0c981`

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