PDF malware analysis — malicious · 611c230c16d65d6c

MALICIOUS

PDF

113.1 KB Created: 2021-05-26 04:41:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: 9035faea6b1dd6686c13bc8f3e585271 SHA-1: 2058d294eec2eb6e5e1b3b63634b063d2fe7dab0 SHA-256: 611c230c16d65d6cd5d58ca1f64f2dec3f18cb524c45f0a6b71aec8b90dd52cf

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with the primary malicious URL being https://druttle.ru/strik. The heuristic PDF_SEO_LINK_FARM indicates a large number of external links, suggesting a link farm or redirection mechanism. ClamAV detection and ML classification further support its malicious nature, likely for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

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 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.
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://druttle.ru/strik?utm_term=test+de+kolb+en+ligne PDF link annotation
- https://rixexumig.weebly.com/uploads/1/3/2/6/132681576/fatimekokamov.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4477387/normal_5fddaf40e47a2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420454/normal_601d912e46cfc.pdfIn PDF document text
- https://lokevevivepino.weebly.com/uploads/1/3/4/1/134131736/zajibigajovabaxijuge.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4496577/normal_5fcd94f3d1e0c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4427501/normal_5ff09f33613f5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380079/normal_6020fc19a3d8f.pdfIn PDF document text
- https://tusululobiwivet.weebly.com/uploads/1/3/1/1/131163859/5257904.pdfIn PDF document text
- https://fakozopaximubod.weebly.com/uploads/1/3/1/4/131453484/mufudazanevo.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4498842/normal_5ffe1d399d613.pdfIn PDF document text
- https://pepedojimu.weebly.com/uploads/1/3/1/0/131069997/kisukus-saxakefofa-jujiwogoso-wanaxudu.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4490739/normal_5fd046e229fe6.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/nutanigonu/poetry_comprehension_worksheets_for_6th_grade.pdfIn PDF document text
- https://s3.amazonaws.com/luworizesupox/jojiwef.pdfIn PDF document text
- https://s3.amazonaws.com/dowadotiju/59067199716.pdfIn PDF document text
- https://s3.amazonaws.com/metubevozisul/christian_quizzes_and_answers.pdfIn PDF document text
- https://s3.amazonaws.com/fadadedezeker/dosipuximufiteperal.pdfIn PDF document text
- https://s3.amazonaws.com/zatasipezeg/jewolat.pdfIn PDF document text
- https://s3.amazonaws.com/kibavutibeved/triple_baconator_nutrition_information.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5a45c85f-3cd2-447a-84ed-f27d473f3ec0/raviwovipudixadonowadakof.pdfIn PDF document text
- https://s3.amazonaws.com/wefadep/happy_holidays_gift_card_template.pdfIn PDF document text
- https://s3.amazonaws.com/jazofi/sogafewipidasunisif.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1dc9868b-a4df-4dcc-a186-7496a204fcea/km_premiere_pro_pc_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dcc5a58b-0314-4934-9b6f-203faf3bcfb5/686652978.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_off00016698.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16698	4840 bytes
SHA-256: `d10db5f339133bf69c6184a890539d60e87a29567da62485348e082f404bd268`
`font_01_sfnt_off00017728.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x17728	12756 bytes
SHA-256: `9837f45eff1ae5102de7b29e5dc6d24c5427ba56a4e2163b536f7a45903f29c9`
`font_02_sfnt_off00019f42.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x19F42	16204 bytes
SHA-256: `31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf`

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