PDF malware analysis — malicious · 45dcc8933314a5e0

MALICIOUS

PDF

74.0 KB Created: 2021-05-10 21:44:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: 13b280660b8c42866c620afb661991cf SHA-1: 7209c293950d46757dcba5e68476193c1e0c3b2a SHA-256: 45dcc8933314a5e0c38f2eea47b08fd78c76b11d24c3015c4772dc99d55de571

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple compromised WordPress sites, likely for phishing or malware distribution. The presence of external URIs and link farm heuristics strongly suggests this attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608780a71d74a---65344947137.pdf In PDF document text
- https://craftsmancuttingdies.com/wp-content/plugins/super-forms/uploads/php/files/498653f673ffee609bd5b02e0e1f72ed/jilimeduvavafawuk.pdfIn PDF document text
- https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/16075e0e980457---bafuxilemiw.pdfIn PDF document text
- http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/16076fdc9509b9---benerapup.pdfIn PDF document text
- https://xn----7sbbjg7ctfs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/96eaaa6ae3e0b399ee3e84eb700b231e/zoxibakutezim.pdfIn PDF document text
- https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16085186be547c---juvegufivese.pdfIn PDF document text
- https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/e181a63a7f699845def31af8516766ac/jezurizadupemakej.pdfIn PDF document text
- https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/ka20nkvbifa6l8hf14ir7en2c0/bubegevamujozilalivulo.pdfIn PDF document text
- https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/0948fe9f22663a0695ca884c6ec025a2/23281295.pdfIn PDF document text
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e04b00f21d---8470655287.pdfIn PDF document text
- http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/16094768ac28bc---zuredojisotezerejidinavol.pdfIn PDF document text
- https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/658f0f829c467372ae39103ba3e8a42a/17477162159.pdfIn PDF document text
- http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160804d877896d---35903853762.pdfIn PDF document text
- https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/aitli92t3nbvilavdpe1m3eelm/97624389669.pdfIn PDF document text
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160944051f020e---dejisopisu.pdfIn PDF document text
- https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/160983d803cd14---3471943134.pdfIn PDF document text
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/25d4a9e2539df99d1ffe18c33dd54406/58287447756.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=teachers+pay+teachers+spanish+worksheetsPDF 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d53c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD53C	4984 bytes
SHA-256: `b915c00a1d3b8e16d64015a41c2a853e4c8d4acf82c388a382782cddfb76834c`
`font_01_sfnt_off0000e637.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE637	10988 bytes
SHA-256: `9146a64ae933ca367c60ee60cc8e61bb729eb3aa2d2f02875756e4fa068c17a7`
`font_02_sfnt_off00010b06.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B06	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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