PDF malware analysis — malicious · e82a04d17b7d6cbc

MALICIOUS

PDF

80.9 KB Created: 2021-06-10 08:29:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 7e69202becae6ff0b58bb4d47c6820eb SHA-1: b0ae25e7858e740124292e9e692e5a9f7be7569f SHA-256: e82a04d17b7d6cbcb492d1ba561b734c4854a9667fcb68a14dece0bfe3cf92ba

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URLs pointing to disposable hosting, designed to redirect users to potentially harmful content. The presence of a `utm_term` parameter in one of the URLs suggests a phishing or scam-related lure, possibly related to 'Clash Royale'.

Machine Learning

Nyx PDF Classifier malicious score 0.9954

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
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://allytemp.ru/pbw?utm_term=clash+royale+pc+without+emulator PDF link annotation
- https://cdn-cms.f-static.net/uploads/4389384/normal_5fd2feed61395.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366000/normal_5ff14672cbcd6.pdfIn PDF document text
- https://dubamuxurel.weebly.com/uploads/1/3/4/4/134463085/kewifilorazi.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4410989/normal_5fc6fe6a84a45.pdfIn PDF document text
- https://kijesutezex.weebly.com/uploads/1/3/5/3/135328712/4395919.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4419205/normal_60b04d8d55664.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4495037/normal_600bb959f24c9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4478667/normal_606a957abf042.pdfIn PDF document text
- https://wubenigulusetib.weebly.com/uploads/1/3/4/7/134712949/tosef.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413457/normal_601a80150e3fa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4468531/normal_5fdabb1dde439.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382771/normal_5fe7e19e8814b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4443804/normal_6040b94c3dc9b.pdfIn PDF document text
- https://butiziro.weebly.com/uploads/1/3/4/3/134308177/wobelelijodoj.pdfIn PDF document text
- https://duwesokele.weebly.com/uploads/1/3/1/6/131606866/9710511.pdfIn PDF document text
- https://velineninebag.weebly.com/uploads/1/3/4/6/134608195/2c9bd14c538baeb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4461229/normal_6068507d2dfcc.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4479933/normal_60b3cf37cd8ae.pdfIn PDF document text
- https://jevalibiku.weebly.com/uploads/1/3/4/2/134266190/lazetivoveg-fividi-bafiz.pdfIn PDF document text
- https://wiwupaluw.weebly.com/uploads/1/3/1/6/131606778/d95270.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413573/normal_60bf3e0f49119.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368226/normal_603eef3bc41c9.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4369305/normal_60b44714679f1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366659/normal_6030f5f6c7193.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403679/normal_60479b4b51af3.pdfIn PDF document text
- https://zivozisexime.weebly.com/uploads/1/3/2/8/132814465/def19.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e8c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8C2	5272 bytes
SHA-256: `fc84f81034f21b2b523c23667ff6c6f70eab214306cf0399659a4badc9a94f85`
`font_01_sfnt_off0000fa97.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA97	10488 bytes
SHA-256: `13b0441d6f1a8e962825bf3d88c3f90b8030c4f8ba7bd78448bb38eec671d9f2`
`font_02_sfnt_off00011e65.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11E65	16312 bytes
SHA-256: `975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15`

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