PDF malware analysis — malicious · e54fcd1d324e14b4

MALICIOUS

PDF

72.0 KB Created: 2021-03-30 22:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e61eb9015dff22097cabd6e00f7f0bd2 SHA-1: 7a827bacb38389c1646f4f1c2e854821ba5abc28 SHA-256: e54fcd1d324e14b4373ca3a6a3bb33d2fc462a4172bf14308ce6f407b8c0a160

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, suggesting a link farm or phishing attempt. The presence of a 'download button' lure further supports a malicious intent to direct users to potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 6

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.
ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://jumiwimov.ru/strik?utm_term=what+is+a+coordinating+conjunction+fanboys
- https://leduzurukidep.weebly.com/uploads/1/3/4/8/134858842/202f40e17aba7.pdf
- http://nexofozupugasi.mywebcommunity.org/bepuduteva.pdf
- https://xasukibumit.weebly.com/uploads/1/3/4/7/134749231/32d1d9a.pdf
- https://cdn.sqhk.co/woteruzid/ftchbjh/panic_button_gift.pdf
- http://kowojolajamuv.getenjoyment.net/wisodopagukatepapel.pdf
- https://cdn.sqhk.co/novitovikor/ue8pjfD/29780960704.pdf
- https://cdn.sqhk.co/kulobuwaxegu/SjdmijU/feeding_my_pet_frog.pdf
- https://cdn.sqhk.co/zarejesorufo/hEgejeE/filopibex.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://a21f0d7d-5fe0-4a99-a381-3b18266e0880.filesusr.com/ugd/6c313a_2db29128c1f94b1384ea5d318ab4133c.pdf?index=true
- http://tavoxelelenasi.onlinewebshop.net/jomitujurimivonor.pdf
- https://26577e91-18e8-42c3-8e85-49dcca1d6605.filesusr.com/ugd/195787_5387b190d973427aa72b57eb6ab0506e.pdf?index=true
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000dbe6.bin` `d31e7c7be73d3656255062707a549025afbc6fa87fc199c4e75cd127dc273021`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBE6	5580 bytes
`font_01_sfnt_off0000eef1.bin` `468543a16ea1ba3a67515606bcccda56f565dd2935f911656526a6f0301d4fce`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEEF1	10628 bytes

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