PDF malware analysis — malicious · ed18748cfb7f68e4

MALICIOUS

PDF

92.8 KB Created: 2021-06-05 08:12:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 41fb8a6a09be83a79f1b432495566ea5 SHA-1: e18e6bff6aecf74576ea27ed58e382e505ba1bfe SHA-256: ed18748cfb7f68e430582a4b7a543a0ce2173282c819aafa86bd5cf5075132a9

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic indicating it's a link farm on disposable hosting, directing users to a URL that appears to be a lure for movie content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. No scripts were extracted, but the PDF structure itself is indicative of a malicious lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://lozipotod.ru/123?utm_term=chhota+bheem+and+krishna+kirmada+movie PDF link annotation
- https://cdn-cms.f-static.net/uploads/4454054/normal_5fd1eae1ce47f.pdfIn PDF document text
- https://bojubuloxobepi.weebly.com/uploads/1/3/0/9/130969884/910440.pdfIn PDF document text
- https://sokowerifali.weebly.com/uploads/1/3/6/0/136053586/4663844.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4495059/normal_601a5a9b94242.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4506200/normal_6002e9b85f8a8.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4447465/normal_5ffdcfa62a6d1.pdfIn PDF document text
- https://batuginuvitewaw.weebly.com/uploads/1/3/4/0/134013132/3612561.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4495271/normal_5ffbef7f5553c.pdfIn PDF document text
- https://difodofixipa.weebly.com/uploads/1/3/0/8/130814112/9801054.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4455208/normal_6046756947b81.pdfIn PDF document text
- https://gawenowufiwozup.weebly.com/uploads/1/3/1/3/131383543/2ccdb5b87cff.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476925/normal_601cb7a71e9d3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416513/normal_60247dc625c18.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4419192/normal_5ffc92519e249.pdfIn PDF document text
- https://nepuvojikonutoz.weebly.com/uploads/1/3/4/6/134677469/c4fe03de480c95.pdfIn PDF document text
- https://tarakemutelomul.weebly.com/uploads/1/3/2/3/132303353/lidolo-fosojoxo-nixerojeralux.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486351/normal_60b7db970df3f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://saladolu.pbworks.com/w/file/fetch/144591075/retunimosi.pdfIn PDF document text
- http://garifukedako.pbworks.com/f/diseo_de_maquinaria_norton_4_edicion_gratis.pdfIn PDF document text
- http://jilawuxifi.pbworks.com/w/file/fetch/144595326/car_rental_bill_format_india_excel.pdfIn PDF document text
- http://fijinatuzut.pbworks.com/f/54400199904.pdfIn PDF document text
- http://lulatigono.pbworks.com/w/file/fetch/144537612/apostles_creed_catholic_prayer.pdfIn PDF document text
- 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
- 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_off0001197e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1197E	5204 bytes
SHA-256: `2b078d4f1eeafcd26480693db737ddf826ea765eb9533f066a8b827eb9dfc2bc`
`font_01_sfnt_off00012afd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12AFD	10736 bytes
SHA-256: `f954ab85581872b338fd61a9677fc7f2e35b7cd33226c75c4bce15c5d9bb60f5`
`font_02_sfnt_off00014fef.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14FEF	16164 bytes
SHA-256: `e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6`

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